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History · 1996 to 2026

The aftermarket: hulls, rule books and closures

In plain words. Some aftermarket makers build whole hulls rather than parts. This chapter sets out what documents show about those makers, how the IJSBA's rule books let aftermarket parts and hulls into its classes, and which companies the documents record closing, with the reason where the company gave one.

This chapter reads what documents say about the makers of aftermarket hulls and complete skis, about Blowsion's name on the World Finals, about how each tier of the IJSBA's rule books admitted aftermarket parts and how its rules on the aftermarket hull moved from size limits, through a unit-count gate and approval requirements, to approval of named hulls, and about the closures that trade reports and registers record, with the reason where the company gave one.

Words on this page (8)
Aftermarket Part
A part that replaces an original one or is used in addition to it, and is not limited to providing the same function as its OEM counterpart. That is the 2010 glossary saying plainly what the 2002 one implied.
Homologation
Official approval of a model of craft, or of a part, as eligible to race under a body's rules. The terms vary by body and year; the 2002 IJSBA book wanted at least 500 identical units on sale (200 for the Ski Division), the 2026 UIM book wants at least 50 built and a homologation certificate for its GP4, GP3 and GP2 championships and a UIM logbook for a GP1 prototype, and the current IJSBA books also homologate aftermarket hulls.
OEM
Original equipment manufacturer, meaning the part or specification as the maker of the machine supplied it; UIM defines OEM parts as those installed on each model at the time of manufacture. IHRA J.7.1 lets original equipment be updated or backdated with OEM parts from the same make and model when that brings no performance advantage, and it also allows like-for-like replacement parts that add no performance.
Ski Limited
IJSBA class. NOT renamed in 2018. The pending 2018 change list says Ski Limited had no changes and would be kept as a class description in an addendum, but that in most cases, especially at World Finals, it would be replaced with the newly created Mod Lites. The 2025 scoring rules still use Novice Ski Limited Slalom and an Expert Ski Limited Closed-Course World Champion as examples.
Ski Mod Lites
IJSBA class created 2018. Prefix SML. Rules at ModLites2018Rules.pdf on IJSBA's own server
Ski Modified
IJSBA class. Naturally aspirated four stroke only. 0-1100cc and 1101-1500cc
Ski Superstock
IJSBA class. Document text says Ski Modified inside the Ski Superstock file
waterbox
The final part of the exhaust system, after the expansion chamber, where water is mixed in to muffle the exhaust noise; four-strokes have one as well as two-strokes. Shop writing calls the stock waterbox of the Kawasaki SXi 750 its muffler, but the rulebooks list waterbox and muffler as separate parts. Some classes open it, some bar any change to it, and the hose after it is often free when the box is not.

On the engine

In the water path

Under and on top

Around the parts

  1. Shops and their teams
  2. Pipes and engine parts
  3. Pumps, plates and registers
  4. Hulls, rules and closures (this chapter)
The parts the four aftermarket chapters cover, grouped by where they sit. A map of the chapters, not a drawing of any machine, and not every part a ski has.

Hull makers and complete skis, as far as documents date them

Likely

Few documents date a hull, and the makers' own pages are among those that name one. The Watercraft Journal reported on 30 December 2013 that Rick Roy and RRP had launched their own hulls and complete ski designs more than a handful of years earlier, named six Rickter models, and said a new factory in Thailand was building carbon-fibre and glass-fibre hulls by hand. A supplier's release of 2 May 2016 names five 2016 models and calls him founder and owner of Rickter-RRP. The registry's RICKTER mark, for personal watercraft hulls and related composite parts, was filed on 19 June 2023 and registered on 2 July 2024 to a Canadian corporation, which claims first use on 31 October 2008. The same magazine named Nick Barton in March 2017 as owner and founder of Krash Industries, and reported on 12 April 2017 that the maker's hulls would keep being made in Thailand and its skis assembled in Australia, and that its JB-1 hulls had been launched six years earlier; its sales manager said in November 2018 that it began in 2008 as a hull builder, which is the company's own account. The KRASH mark was filed on 7 April 2016 and registered on 28 January 2020 to an Australian company, and the registry cancelled it on 14 August 2026 because the registrant did not file an acceptable declaration, a status that says nothing about trading. Lee Stone Products' own page says it introduced the Revolver hull in 2012. The UK register shows a company of that name incorporated on 1 February 2018 and dissolved on 30 July 2024, yet the association's post of 25 November 2024 speaks of the company's turnkey Revolver S1 freestyle watercraft, so the register and the product do not date each other. A page of the ericmalone.com site captured in February 2007, which prints the initials EME, offers 800 and 1000 cc freestyle models with a choice of 150 or 210 horsepower engines, and a 2022 newspaper says Eric Malone made his freestyle machines as Eric Malone Enterprises; no held text dates its start (searched the archive's mirror and research cache, 2026-10-06). Bullett Racing's own page says it began as a designer and fabricator of aftermarket designs for the marine and automotive industries, and that its principals have made fibreglass boats and carbon-fibre watercraft hulls; the association's posts of September 2024 name its V6 and place Bullett Racing LLC in Lake Havasu City.

Sources: Watercraft Journal RRP factory 2013; TeXtreme Rickter release 2016; USPTO RICKTER mark; Watercraft Journal Krash KV997 2017; Watercraft Journal Krash ski 2017; Watercraft Journal Krash dealers 2018; USPTO KRASH mark; Lee Stone Products about page; Companies House Lee Stone Products; IJSBA SBT lead title sponsor 2025 and 2026; EME spec page 2007; Altoona Mirror 28 March 2022; Bullett Racing About page; IJSBA Bullett hull application; IJSBA Bullett V6 homologated

Blowsion: a registry's record and the World Finals name

Confirmed

Blowsion's own releases, printed by the association in 2024 and 2025, give 1989 as the year it began; that is the company's account, and the Oregon registry records searched on 21 September 2026 do not reach back to it (California's registry was not read, and none of its records for the name is held; searched the archive's mirror and research cache, 2026-10-06). The Oregon registry's earliest record under the name is an assumed business name, Blowsion Kolors, with an individual registrant, applied for on 8 August 2003, renewed at intervals and inactive since a failure to renew on 9 August 2015. Blowsion, LLC was organised on 28 September 2010 and is active, with its principal place of business in Sherwood, Oregon. The name also sits in the title of the association's annual event. Its results pages for 7 and 8 October 2017 are headed the 2017 Blowsion World Finals, its update of 22 September 2017 says the company sponsored that event, and its September 2018 post uses the same name for the 2018 event. Its announcements of May 2023 and November 2024 name Short Block Technologies title sponsor of the World Finals for 2023 and 2024 and lead title sponsor for 2025 and 2026, and its posts on the 2024 and 2025 events describe Blowsion's return to the trade show, the 2025 one as a vendor and sponsor. Blowsion's releases, printed in those posts, call it a two-time title sponsor, which is consistent with the 2017 and 2018 event names, although the releases give no years (checked 2026-10-06). The company's releases describe it as a maker of parts, custom paint and performance products and, in 2025, as a manufacturer and customizer of stand-up skis; no held document shows a hull built by Blowsion (searched the archive's mirror and research cache, 2026-10-06).

Sources: Oregon registry Blowsion Kolors; Oregon registry Blowsion LLC; 2017 World Finals Saturday results; 2017 World Finals Sunday results; IJSBA end of summer update 2017; IJSBA 2018 Blowsion World Finals nations; IJSBA SBT title sponsor 2023 and 2024; IJSBA SBT lead title sponsor 2025 and 2026; IJSBA Blowsion 35 years post 2024; IJSBA Blowsion returns post 2025

What each tier let in, and one rule about water

Confirmed

The 2002 book prints the word aftermarket 13 times in its Stock part, 42 in Limited, 45 in Superstock and 41 in Modified (counted as the copy held here prints it, hyphenated line breaks included), so by that count the large step is from Stock to Limited. Stock already admits, among other parts, aftermarket handlebars, throttles, switches, steering cables, flame arresters, primer systems and replica bumpers. Limited adds carburettors, intake manifold, reed and rotary valves, fuel injection under hose and fitting conditions, the cylinder head, exhaust manifold and pipe, and the CDI unit, but keeps the original waterbox and bars internal engine work. Stock's own list grew: the 2002 part allows no change to the cooling system beyond flush kits, bilge systems and a disabled temperature sensor, and the 2010 part lets aftermarket cooling lines and water bypass systems in. One rule shows how the lists moved. Personal Watercraft Illustrated of May 1996 quoted rule 9.1.15 of the 1996 IJSBA book as requiring fixed-type valves in the cooling system and barring "manually or electrically (or otherwise) controlled devices used to alter the flow of water", and reported that on that wording one maker's electronically controlled water injection was not legal at IJSBA events; the association's technical director, quoted, gave safety and sound as the reasons. Measured against the wording the magazine quoted, the 2002 book keeps the water injection or water jacket requirement but admits fixed or automatic valves, solenoids included, and bars only manually controlled devices in Limited, Superstock and Modified. From the 2010 book the Stock parts bar electronically controlled water injection unless it was fitted originally, and the current Ski Stock document repeats the bar.

Sources: 2002 rule book; 2010 rule book; PWI May 1996 Factory Pipe test; IJSBA Ski Stock document 2025

The aftermarket hull in the rule books, 2002 to 2025

Contested

The association's rules on the aftermarket hull began as limits on size, gained a unit-count gate and approval requirements, and by 2024 turned to approval of named hulls, with a length limit still standing beside them. Its 2002 book capped a Ski Division hull at 120 inches. The 2010 book's Open Class part admits aftermarket hulls on watercraft homologated in numbers of 500 or higher, and the 2016 text adds that such hulls must be approved and homologated by the association. Its 2015 draft and the 2016 text cap the overall length of a Ski at 97 inches. An interim ruling of 24 January 2019 set 102 inches overall for a Ski with an aftermarket hull, 97 of them hull. A bulletin of 10 June 2019 said that no aftermarket hull was approved by brand or model and that new 2019 designs might be reevaluated if a hull monitoring system was designed, and on 9 October 2019 the association announced a first meeting of aftermarket hull manufacturers for that evening. On 4 October 2023 the association announced the end of Ski Mod Lites, to be reborn as Ski Modified 1100. Its posts of 4 to 7 September 2024 name five applicants to the homologation programme, and on 30 September it announced four complete: Bullett Racing's V6, Kommander Industries' GP1, VK Composites' Hyperion, and Fast Powersports' GP1R and GP16. Its report of 1 October says seven entities applied, two others awaited paperwork, and that it offered the Pro Force of Pro Watercraft an approval on two conditions the producer's representative would not accept; a newspaper of 26 September, whose lead alone is held, reports the producer's owner accusing organizers of unfairly targeting the ski. The current Ski Modified and Ski Grand Prix documents admit IJSBA-approved aftermarket hulls and top decks, and the Ski Grand Prix document states a maximum length of 97 inches for an aftermarket hull; Ski Superstock prohibits aftermarket hulls, and Runabout Open/GP and Sport GP admit hulls on models of 500 or more units when approved and homologated. The report also says the association banned all aftermarket hulls in 1997 and reintroduced them in the mid 2000s, although its 2002 book already printed "Hull may be modified or aftermarket" in the Modified part.

IJSBA report on remaining hull submissions says
The association's report of 1 October 2024 says it banned all aftermarket hulls in 1997 and reintroduced them in the mid 2000s so that Ski racing could continue if new original equipment Ski were no longer built.
2002 rule book says
The Modified part of the 2002 book prints "Hull may be modified or aftermarket" within the length and width of the original upper deck component of the bond flange, so an aftermarket hull was allowed in that part before the mid 2000s.

Sources: 2002 rule book; 2010 rule book; 2015 draft rule book; 2018 pending changes and 2016 book; IJSBA interim hull ruling of 24 Jan 2019; IJSBA hull bulletin of 10 June 2019; IJSBA hull makers meeting of 9 Oct 2019; IJSBA Mod Lites ends 4 Oct 2023; IJSBA first hull applicant post 2024; IJSBA Pro Watercraft hull application; IJSBA Kommander hull application; IJSBA Hyperion hull application; IJSBA Bullett hull application; IJSBA Kommander GP1 homologated; IJSBA Bullett V6 homologated; IJSBA VK Composites Hyperion homologated; IJSBA Fast Powersports homologated; IJSBA report on remaining hull submissions; Today's News-Herald on Pro Force 3 2024; IJSBA Ski Modified document; IJSBA Ski Grand Prix document 2025; IJSBA Ski Superstock document 2025; IJSBA Runabout Open GP document 2024; IJSBA Sport GP document 2025

Closures, and the reasons where companies gave them

Likely

Four closures are reported by documents held here. Where a company gave a reason it is printed as the company's; other voices are kept apart. A Personal Watercraft Illustrated news item, captured on 5 April 2001, reported that Team Butch had closed its doors after 22 years. It says the shop opened in 1979 and that its original owner, Steve Laham, sold it in 1999, and it gives no reason. On 5 September 2018 The Watercraft Journal reported that R&D, which the magazine calls R&D Performance Products and the company's statement calls R&D Racing Products, would close on 27 September 2018. The company's statement, signed by its president, Glenn Dickinson, says it has decided to close its doors, that orders on hand would ship until the last day, and that as the industry had evolved it looked to a semi-retirement; it names no other cause. The magazine adds, citing insiders who asked not to be named, the cost of doing business in California, foundries and aluminium casting in particular; that is the magazine's report and not the company's reason. On 21 December 2022 the same magazine printed a letter from Skat-Trak's president. It says the company would stop making watercraft impellers, pumps, nozzles, intake grates and accessories, with its last day of sales on 9 December 2022, and gives lack of sales, overseas production and the poor economy as its reasons; paddle tires for sand use continue. The editor's own paragraph names a dwindling economy, the nature of the personal watercraft industry and the legal pitfalls of running a foundry in California, which are the magazine's words. In 2014 the magazine had quoted an employee saying almost all its work was custom, and called paddle tires the far larger side of the business; the company's website, read on 5 October 2026, lists paddle tires and no watercraft product. Rickter's maker announced on 26 April 2023, in a release the magazine printed on 2 May, an end to Rickter hull production at its factory in Thailand, saying that managing a factory remotely from halfway around the world had its challenges and that, despite the effort, the company could not keep it going. It called the halt temporary, said its parts division was unaffected and that it was evaluating new manufacturing partners; no held document says whether hulls have been built since (searched the archive's mirror and research cache, 2026-10-06). Two registry entries record endings and give no reason for any end of trading: the UK register dissolved Lee Stone Products Ltd on 30 July 2024, and the US register cancelled the KRASH registration on 14 August 2026 because the registrant did not file an acceptable declaration; neither says whether trading stopped.

Sources: PWI Team Butch news 2001; Watercraft Journal on R&D 2018; Watercraft Journal Skat-Trak 2022; Watercraft Journal Skat-Trak visit 2014; Skat-Trak website About page 2026; Watercraft Journal RRP Thailand 2023; Companies House Lee Stone Products; USPTO KRASH mark

Not covered, and why (6)

Blowsion was founded in 1989.
The year comes only from the company's own branding and releases, printed by the association in 2024 and 2025. The Oregon registry's earliest record under the name is an assumed business name registered on 8 August 2003, and no registry record reaches 1989 (searched the archive's mirror and research cache, 2026-10-06). The year is not published as fact here; the chapter says only that the company's releases print it.
Blowsion title-sponsored the 2025 IJSBA World Finals.
The association's own posts title that event the 2025 SBT World Finals, name Short Block Technologies lead title sponsor for 2025 and 2026, and describe Blowsion as returning as a vendor and sponsor. Blowsion's own release says it was a two-time title sponsor, and the association's pages name the 2017 and 2018 events for it, so these posts do not support the 2025 claim (checked 2026-10-06).
Skat-Trak closed its personal watercraft division on 21 December 2022, citing lack of sales, overseas production, the poor economy and the regulatory cost of a California foundry.
21 December 2022 is the date of The Watercraft Journal's article, not of the closure: the company's letter gives Friday 9 December 2022 as its last day of sales for watercraft products. The letter's reasons are lack of sales, overseas production and the poor economy; the foundry is the magazine editor's addition, so the claim merges two voices.
R&D closed because of the cost of operating a foundry in California.
The Watercraft Journal attributes the cost of foundries and aluminium casting in California to insiders who asked not to be named, as the primary factor in their view. The company's own statement of 5 September 2018 gives no cause beyond the industry having evolved and calls the change a semi-retirement.
Rick Roy's Rickter merged into Rickter-RRP, 'We Build Legends'.
No held document records a merger (searched the archive's mirror and research cache, 2026-10-06). The 2016 release calls the company Rickter-RRP, the 2023 report calls it Rick Roy Products with a Rickter Composites factory, and the slogan is not in any held text (searched the archive's mirror and research cache, 2026-10-06).
Eric Malone developed the first aftermarket freestyle jet ski.
Only a dealer's news item of 2021 says so, in a promotional paragraph, and it was seen only in a copy saved during research; the 2022 newspaper's similar credit for a trick is single-sourced and was left out of his Key Figures page. A first needs a primary source or two independent ones (checked 2026-10-06).

What could not be read (10)

  • No held document dates the start of trading of Eric Malone Enterprises, Bullett Racing or Lee Stone Products (searched the archive's mirror and research cache, 2026-10-07); the only start date held is the UK register's incorporation of Lee Stone Products Ltd on 1 February 2018. The earliest dated capture of the ericmalone.com site, seen only in a copy saved during research, is of 27 November 2006 and names an EME Custom Signature PWC; the page of February 2007 is the one cited in this chapter.
  • No held document dates Rickter's first hull (searched the archive's mirror and research cache, 2026-10-07). The trademark owner's claimed first use of 31 October 2008 and the 2013 trade report's 'over a handful of years' are the only dates.
  • Krash Industries' start in 2008 rests on the company's sales manager (2018), whose interview also dates its complete skis to about 2014; the magazine's report of 12 April 2017 presents a ready-to-ride Krash ski as newly introduced, with pre-orders open, so no held text settles when the first complete ski was made. The only registry record used for the brand is the KRASH mark of 2016 to 2026; an Australian business register page, seen only in a copy saved during research, lists the name Krash Industries from 10 November 2015 under a different company name and was not used, because the tie rests on the name alone (searched the archive's mirror and research cache, 2026-10-06).
  • The reference page of homologated hulls that the association's posts of 30 September 2024 say it will maintain was not found, and no approval post for 4 Star, Crazy House or the Pro Force is held, so the programme is documented only through the four approval posts, which cover five hulls, and the report of 1 October 2024 (searched ijsba.com's news search for aftermarket hull and the research cache, 2026-10-06).
  • The Pro Force producer's side of the dispute is held only as the visible lead of a newspaper article of 26 September 2024. The producer's own posts and the correspondence the association's report links were not read (searched the research cache, 2026-10-06).
  • No IJSBA rule book of 1996 or 1997 is held. Rule 9.1.15 of the 1996 book is read only as Personal Watercraft Illustrated quoted it in May 1996, and the association's statement that it banned aftermarket hulls in 1997 cannot be tested against a book (searched the archive's mirror and its Wayback capture index, 2026-10-06).
  • R&D's closure was first reported by a JetSkiWorld blog, according to The Watercraft Journal. That first report was not found, so the closure rests on one trade report and the company's printed statement (searched the archive's mirror and research cache for JetSkiWorld pages, 2026-10-06).
  • The Team Butch news item prints no date. Its Wayback capture of 5 April 2001 is the latest date by which the closure had been reported (searched the research cache for other reports of the closure, 2026-10-06).
  • No Skat-Trak statement about the closure beyond the letter printed by The Watercraft Journal is held, and the company's website, read on 5 October 2026, says nothing about the former watercraft division (searched the archive's mirror and research cache, 2026-10-06).
  • The eligible watercraft lists of the 2006 translation and the 2010, 2011, 2012, 2014 and 2015 books print a make named Hydrospace in the Ski Division, with an S4 model in 2006 and S4 and S8 models in the later lists, and the 2018 pending list admits a Hydrospace S4 to earlier Stock specifications. The lists print it as a make with its own models, not as a parts maker, so this chapter does not cover it. The make's own About page captured on 2 May 2005, a trademark record and articles on it were seen only in copies saved during research; none is cited here (searched the archive's mirror and research cache, 2026-10-06).

People on record (11)

Each has a page on Key Figures, named for a public role a document records.

Documents cited in this chapter

  • Watercraft Journal RRP factory 2013 (watercraftjournal.com): Video: Rick Roy Gives Us The RRP Factory Tour (The Watercraft Journal), The Watercraft Journal, 2013-12-30; enthusiast media, medium. A short trade report introducing a factory video: RRP's own hulls and complete skis, the Rickter model names, and a new factory in Thailand. Medium as trade press; the video itself was not viewed.
  • TeXtreme Rickter release 2016 (prnewswire.com): Rickter Launches New Personal Watercraft Line Reinforced by TeXtreme (TeXtreme press release, PR Newswire), TeXtreme (Oxeon AB), distributed by PR Newswire, 2016-05-02; manufacturer primary, medium. A carbon-fibre supplier's release on Rickter's 2016 line, quoting Rick Roy as founder and owner of Rickter-RRP, with an About Rickter paragraph in the companies' promotional voice. Medium for who it names and the models it lists; its grades of Rickter and of him are not repeated.
  • USPTO RICKTER mark (tsdr.uspto.gov): RICKTER, US trademark registration 7432962, serial 98048582 (USPTO TSDR status), United States Patent and Trademark Office, 2024-07-02; government, high. The registry's status page for the RICKTER mark, for personal watercraft hulls and related composite parts: filed 19 June 2023, registered 2 July 2024, owner Rickter R.R.P. Performance Inc., organised in Canada. The first use of 31 October 2008 is the owner's sworn claim. Owner and correspondence addresses are removed from the held copy.
  • Watercraft Journal Krash KV997 2017 (watercraftjournal.com): Videos: Krash Industries Introduces All-New KV997 Two-Stroke Engine, by Kevin Shaw (The Watercraft Journal, 24 March 2017), The Watercraft Journal, 2017-03-24; enthusiast media, medium. The magazine's report, under its editor-in-chief's name, on a hull maker's new two-cylinder two-stroke engine. Its lead calls Nick Barton the maker's owner and founder in the magazine's own voice, and the body quotes him on the engine's design. Medium as trade press for who is named and what he is quoted as saying; the engine's specification and the reasons given for it are the maker's, and the report's praise is not used. The held copy omits site menus, comments and the author note.
  • Watercraft Journal Krash ski 2017 (watercraftjournal.com): Krash Industries Introduces The First $12K Turn-Key Freeride Ski (The Watercraft Journal), The Watercraft Journal, 2017-04-12; enthusiast media, medium. A trade report on a hull maker's complete freeride ski, which in passing calls Steve Laham the founder and owner of Butch's Ski Shop and reports the maker's account of his help with US dealers. Medium as trade press.
  • Watercraft Journal Krash dealers 2018 (watercraftjournal.com): Seven Deadly Questions: Krash Industries' Mike Hodges on New Dealers (The Watercraft Journal, 15 November 2018), The Watercraft Journal, 2018-11-15; enthusiast media, medium. An interview with the company's National Sales Manager on a dealer network for its complete freeride and freestyle skis. Medium as trade press for who was interviewed and what he said; the start in 2008 as a hull builder and the launch of complete skis around 2014 are the company's account of itself and low as history. Prices it prints are not used.
  • USPTO KRASH mark (tsdr.uspto.gov): KRASH, US registration 5969616, serial 79198027 (USPTO TSDR status), United States Patent and Trademark Office, 2020-01-28; government, high. The registry's status page for the KRASH mark, filed on 7 April 2016 through an international registration, registered on 28 January 2020 and cancelled on 14 August 2026 because the registrant did not file an acceptable declaration under Section 71. Goods include personal watercraft, surf skis and boats, clothing and retail services. The owner is K2K Holdings Pty. Ltd., an Australian company; the page does not say that company runs Krash Industries, so the tie rests on the name. Owner and attorney addresses were already omitted in the copy saved when it was read.
  • Lee Stone Products about page (leestoneproducts.com): About Us (Lee Stone Products website), Lee Stone Products; manufacturer primary, low. The company's own account of its founder and its Revolver hull, read on 22 September 2026 only as a summary, not as the full text, so the company's voice twice removed; low for anything about its own history. It also gives ages and family details, which no page uses (checked 2026-10-06).
  • Companies House Lee Stone Products (find-and-update.company-information.service.gov.uk): LEE STONE PRODUCTS LTD, company 11181639, overview (Companies House register), Companies House; government, high. The UK register's overview of the company: private limited company, incorporated 1 February 2018, dissolved 30 July 2024, nature of business manufacture of sports goods and other sports activities. The held copy omits the registered address. It names no person; its officer list was not used, so the register ties the company to no individual on its own.
  • IJSBA SBT lead title sponsor 2025 and 2026 (ijsba.com): Short Block Technologies Signs As 2025 And 2026 World Finals Lead Title Sponsor (IJSBA news post, 25 November 2024), International Jet Sports Boating Association, 2024-11-25; sanctioning body, high. The association's announcement, read on 2026-10-05, of the lead title sponsor for the 2025 and 2026 World Finals. It also says the sponsor had signed to supply new powertrains to Lee Stone Products' turnkey Revolver S1 freestyle watercraft. High for what the association says; the sponsor's own descriptions are not used.
  • EME spec page 2007 (web.archive.org): EME 800 and 1000 CC spec page (ericmalone.com, Wayback capture, February 2007), Eric Malone Enterprises (ericmalone.com); manufacturer primary, low. The company's own promotional page for its freestyle craft as captured in February 2007. Low: company voice. Used only, beside an independent source, for what the company offered then; its claims about itself are not repeated.
  • Altoona Mirror 28 March 2022 (altoonamirror.com): Altoona Mirror sports article on Eric Malone's jet ski career and Eric Malone Enterprises (28 March 2022), Altoona Mirror, 2022-03-28; editorial, medium. A local newspaper's later account of his career, written for a regional hall of fame induction, held as an extract of the career and company lines. Medium as an independent newspaper writing in hindsight; its title counts are reported totals and its "credited with" line rests on it alone, so neither is used. The headline is not repeated in this title because it names a home town.
  • Bullett Racing About page (bullettracing.com): About (Bullett Racing website, live page read 5 October 2026), Bullett Racing; manufacturer primary, low. The company's own undated About page, which names its three founders, lists the marine, automotive and stage work it says it began with, and says its founders have made fiberglass boats and carbon fiber watercraft hulls. Low: all of it is the company's account of itself, and it dates nothing, so it can only be cited with an independent source and as the company's words.
  • IJSBA Bullett hull application (ijsba.com): Bullett Racing Applies For IJSBA Aftermarket Hull Homologation (IJSBA news post, 7 September 2024), International Jet Sports Boating Association, 2024-09-07; sanctioning body, high. The association's announcement that Bullett Racing LLC, out of Lake Havasu City, Arizona, had submitted a complete application for its Bullett V6. Read live on 2026-10-06; it places the company in that city in the association's words.
  • IJSBA Bullett V6 homologated (ijsba.com): Bullett Racing Homologates V6 For Race Use (IJSBA news post, 30 September 2024), International Jet Sports Boating Association, 2024-09-30; sanctioning body, high. The association's announcement that Bullett Racing had completed its aftermarket hull homologation for the V6. Read live on 2026-10-06.
  • Oregon registry Blowsion Kolors (egov.sos.state.or.us): Oregon Secretary of State Business Registry, BLOWSION KOLORS, registry number 165832-96 (read 21 September 2026), Oregon Secretary of State, Corporation Division; government, high. The state registry's record of an assumed business name, BLOWSION KOLORS, with an individual registrant whose name and address the page does not print: application on 8 August 2003, renewals in 2005, 2007, 2009 and 2011, failure to renew on 9 August 2013, reactivation on 19 November 2014 and failure to renew again on 9 August 2015. The page was read on 21 September 2026.
  • Oregon registry Blowsion LLC (egov.sos.state.or.us): Oregon Secretary of State Business Registry, BLOWSION, LLC, registry number 717317-99 (read 21 September 2026), Oregon Secretary of State, Corporation Division; government, high. The state registry's record of BLOWSION, LLC: articles of organization filed on 28 September 2010, status active, next renewal due 28 September 2027, a principal place of business in Sherwood, Oregon, and a manager whose name the page does not print. The street address is replaced in the held copy. (as Oregon registry Blowsion Kolors above)
  • 2017 World Finals Saturday results (ijsba.com): 2017 Blowsion World Finals Results, Saturday 7 October (IJSBA page), International Jet Sports Boating Association, 2017-10-07; sanctioning body, high. The association's posted results for the Saturday of the 2017 World Finals, read on 22 September 2026.
  • 2017 World Finals Sunday results (ijsba.com): 2017 Blowsion World Finals Results, Sunday 8 October (IJSBA page), International Jet Sports Boating Association, 2017-10-08; sanctioning body, high. The association's posted results for the Sunday of the 2017 World Finals, including the pro classes, read on 22 September 2026.
  • IJSBA end of summer update 2017 (ijsba.com): IJSBA End Of Summer Update (IJSBA news post, 22 September 2017; Blowsion section), International Jet Sports Boating Association, 2017-09-22; sanctioning body, high. The association's update before the 2017 World Finals, held as saved when read, which keeps the Blowsion section only. That section says Blowsion sponsored the 2017 World Finals and calls the event the 2017 Blowsion World Finals; the praise for the company is not used.
  • IJSBA 2018 Blowsion World Finals nations (web.archive.org): Participating Nation List Grows For 2018 Blowsion World Finals (IJSBA news post, 4 September 2018, Wayback capture of 24 September 2020), International Jet Sports Boating Association, 2018-09-04; sanctioning body, high. The association's post of 4 September 2018 on the participating nations, as the Wayback Machine captured the page. Its title and its results menu (2018 Blowsion World Finals Results) show the event name the association used in 2018. Held for the event name only.
  • IJSBA SBT title sponsor 2023 and 2024 (ijsba.com): IJSBA Announces Short Block Technologies As Title Sponsor For 2023 And 2024 World Finals (IJSBA news post, 16 May 2023), International Jet Sports Boating Association, 2023-05-16; sanctioning body, high. The association's announcement, read on 2026-10-05, that Short Block Technologies signed as title sponsor of the 2023 and 2024 World Finals. High for the sponsorship; the praise it prints for the sponsor, and the list of companies it says the sponsor's group owns, are not used.
  • IJSBA Blowsion 35 years post 2024 (ijsba.com): Blowsion Announces Its Continued Support Of The IJSBA World Finals For The 35th Consecutive Year (IJSBA news post, 26 September 2024), International Jet Sports Boating Association, 2024-09-26; sanctioning body, high. The association's post, read on 2026-10-05, welcoming Blowsion to the trade show part of the 2024 Short Block Technologies WGP-1 World Finals and printing Blowsion's release below it. High for the association's wording of the event title and of Blowsion's part in it; the release's statements on its own history (since 1989, 35 consecutive years, a two-time title sponsor) are the company's voice and are low. The contact email is replaced.
  • IJSBA Blowsion returns post 2025 (ijsba.com): Blowsion Returns As Vendor And Sponsor To 2025 SBT World Finals (IJSBA news post, 23 September 2025), International Jet Sports Boating Association, 2025-09-23; sanctioning body, high. The association's post, read on 2026-10-05, titling the event the 2025 SBT World Finals and printing Blowsion's release on returning to its trade show part as a vendor and sponsor. High for the event title and the vendor and sponsor wording; the release's founding year and its claim of two title sponsorships are the company's voice and are low. The contact email is replaced.
  • 2002 rule book (web.archive.org): IJSBA 2002 Official Competition Rule Book, International Jet Sports Boating Association, 2002; sanctioning body, high. The complete 2002 book in 25 sections, the oldest full IJSBA rule book held here, served from a Norwegian club's document server and captured by the Wayback Machine. Four numbered technical parts (Stock, Limited, Superstock, Modified), three divisions, the 500 and 200 unit homologation figures, and the United States class list.
  • 2010 rule book (web.archive.org): IJSBA 2010 Official Competition Rule Book, International Jet Sports Boating Association, 2010; sanctioning body, high. The complete 2010 book, kept by the Czech affiliate after IJSBA removed it. Part 8 is headed Open Class with Superstock as an addendum; the Stock part carries the Lites and class naming addenda; part 4 prints the 500 unit figure without a Ski exception and the 100 unit route below it; the appendix adds Special Production homologation below 100 units.
  • PWI May 1996 Factory Pipe test (web.archive.org): Factory Pipe Products Sea-Doo XP 720 Exhaust System, by Jeff Hain (Personal Watercraft Illustrated, May 1996, Wayback capture), Personal Watercraft Illustrated, 1996-05; enthusiast media, medium. The magazine's test of the exhaust at Factory Pipe Products' headquarters, naming Ross Liberty as owner, describing his Electronically Controlled Water Injection (ECWI), and reporting that the ECWI was not legal at IJSBA events as of press time. The article's own verdicts on the product are not used.
  • IJSBA Ski Stock document 2025 (ijsba.com): IJSBA Ski Stock (SSK), 2025 class document, International Jet Sports Boating Association, 2025; sanctioning body, high. The current Ski Stock class document, held here as a text copy. Used for its cooling system rule, which bars electronically controlled valves or water injection unless originally equipped and bars manually controlled devices.
  • 2015 draft rule book (web.archive.org): IJSBA 2015 Official Competition Rule Book (draft), International Jet Sports Boating Association, 2015; sanctioning body, high. A draft, as its file name says, so cited only where it repeats earlier books. Its class list is the 2014 list unchanged, Vintage Ski included.
  • 2018 pending changes and 2016 book (jetski.cz): Pending rule changes to the 2018 IJSBA Competition Program, with the 2016 Official Competition Rulebook text, International Jet Sports Boating Association, 2018; sanctioning body, high. The first 74 lines of the extract are IJSBA's posted list of pending changes to the 2018 competition program, written before the Board of Directors ratified them; the rest of the file is the text of the 2016 book (copyright 2016) with its 2016 Displacement Guide. Held live from the Czech jetski.cz server at pull time, not from the Wayback Machine. No signatory is copied from it.
  • IJSBA interim hull ruling of 24 Jan 2019 (ijsba.com): IJSBA Releases Interim Hull And Displacement Ruling For Ski GP and Ski Modified Classes (IJSBA news post, 24 January 2019), International Jet Sports Boating Association, 2019-01-24; sanctioning body, high. The association's notice of an interim overall length of 102 inches for a Ski with an aftermarket hull, 97 inches of it hull and up to 5 more for ride plate and nozzle extensions, pending a possible 2019 rule change. Read live on 2026-10-06. Held for the lengths and the date; the contact email is replaced.
  • IJSBA hull bulletin of 10 June 2019 (ijsba.com): IJSBA Bulliten On Present State And Potential Future Of Aftermarket Hulls (IJSBA news post, 10 June 2019), International Jet Sports Boating Association, 2019-06-10; sanctioning body, high. The association's own bulletin on aftermarket hulls, read live on 2026-10-06, with the post's spelling of bulletin kept in the title. It says no aftermarket hull was approved by brand or model as of 2019, that homologating hulls and issuing trackable identifications had been introduced within the last five years, and that new 2019 designs might be reevaluated if a hull monitoring system was designed. The Watercraft Journal printed the same text on 22 July 2019. The contact email is replaced in the held copy.
  • IJSBA hull makers meeting of 9 Oct 2019 (ijsba.com): IJSBA Announces Aftermarket Hull Manufacturers Meeting Tonight At Black Bridge Brewery In Lake Havasu City (IJSBA news post, 9 October 2019), International Jet Sports Boating Association, 2019-10-09; sanctioning body, high. The association's notice, dated the evening of the meeting, of the first Aftermarket Hull Manufacturers Meeting, closed to the public, at a Lake Havasu City brewery. Read live on 2026-10-06; held for the date and the fact of the meeting only.
  • IJSBA Mod Lites ends 4 Oct 2023 (ijsba.com): IJSBA Mourns The Loss Of Mod Lites (IJSBA news post, 4 October 2023), International Jet Sports Boating Association, 2023-10-04; sanctioning body, high. The association's notice, written as an obituary, that Ski Mod Lites has ended, describing the class as meant to bridge the end of Ski Two Stroke Limited with lower horsepower engines in aftermarket hulls, and expecting it reborn as Ski Modified 1100. Read live on 2026-10-06.
  • IJSBA first hull applicant post 2024 (ijsba.com): Fast Powersports Is First Applicant For IJSBA Aftermarket Hull Homologation (IJSBA news post, 4 September 2024), International Jet Sports Boating Association, 2024-09-04; sanctioning body, high. The association's announcement that Fast Powersports of Phoenix, Arizona, had submitted a complete packet for the GP1R, GP16 and F1. Read live on 2026-10-06, the page date being the visible date. The contact email is replaced.
  • IJSBA Pro Watercraft hull application (ijsba.com): Pro Watercraft Applies For IJSBA Aftermarket Hull Homologation (IJSBA news post, 5 September 2024), International Jet Sports Boating Association, 2024-09-05; sanctioning body, high. The association's announcement that Pro Watercraft had applied for its Pro Force 3 unit, the application pending. Read live on 2026-10-06; the contact email is replaced.
  • IJSBA Kommander hull application (ijsba.com): Kommander Industries Applies For Aftermarket Hull Homologation (IJSBA news post, 5 September 2024), International Jet Sports Boating Association, 2024-09-05; sanctioning body, high. The association's announcement that Kommander Industries, out of Phoenix, had applied for its GP1 hull and top deck combination. (as IJSBA Pro Watercraft hull application above)
  • IJSBA Hyperion hull application (ijsba.com): Hyperion Brand Ski Are Submitted For Aftermarket Hull Homologation (IJSBA news post, 6 September 2024), International Jet Sports Boating Association, 2024-09-06; sanctioning body, high. The association's announcement that V K Composites of Pathumthani, Thailand, had applied for its Hyperion units. (as IJSBA Pro Watercraft hull application above)
  • IJSBA Kommander GP1 homologated (ijsba.com): Kommander Industries Homologates GP1 Hull (IJSBA news post, 30 September 2024), International Jet Sports Boating Association, 2024-09-30; sanctioning body, high. The association's announcement that Kommander Industries had completed its aftermarket hull homologation for the GP1 and could advertise it as IJSBA Race Legal for products consistent with the specifications it had provided. Read live on 2026-10-06.
  • IJSBA VK Composites Hyperion homologated (ijsba.com): VK Composites Homologates Hyperion Hull For Competition (IJSBA news post, 30 September 2024), International Jet Sports Boating Association, 2024-09-30; sanctioning body, high. The association's announcement that VK Composites had completed its aftermarket hull homologation for the Hyperion. Its last sentence names Bullett Racing in error and gives another company's web address, which looks like a copied template. Read live on 2026-10-06.
  • IJSBA Fast Powersports homologated (ijsba.com): Fast Powersports (IJSBA news post, 30 September 2024), International Jet Sports Boating Association, 2024-09-30; sanctioning body, high. The association's announcement that Fast Powersports had completed its aftermarket hull homologation for the GP1R and GP16, not the F1 named in its application. Its last sentence names Bullett Racing in error, which looks like a copied template. Read live on 2026-10-06.
  • IJSBA report on remaining hull submissions (ijsba.com): IJSBA Report On Remaining Aftermarket Hull Submissions: Crazy House, 4 Star, and Pro Force (IJSBA news post, 1 October 2024), International Jet Sports Boating Association, 2024-10-01; sanctioning body, high. The association's report of 1 October 2024 on the three remaining applicants. It says seven entities applied and four were complete, gives the association's own account of the Pro Force application and of an amnesty to 31 December 2024 for owners of used units, and says the association banned all aftermarket hulls in 1997 and reintroduced them in the mid 2000s. High for what the association says; it is one side of a disagreement whose other side is held only as a newspaper lead. (as IJSBA Pro Watercraft hull application above)
  • Today's News-Herald on Pro Force 3 2024 (havasunews.com): Weeks before IJSBA World Finals, ProWatercraft's ProForce 3.0 faces controversy (Today's News-Herald, 26 September 2024), Today's News-Herald (Lake Havasu City), 2024-09-26; editorial, medium. A local newspaper's report, updated 28 September 2024, on a dispute over whether the ProForce 3.0 hull extension met the association's rules. The held copy is the visible lead only, which says the producer's owner accused the organizers of unfairly targeting the ski; the rest sits behind the paper's paywall and was not read. Medium as local news, and cited for that one sentence of the lead.
  • IJSBA Ski Modified document (ijsba.com): IJSBA Ski Modified (SKM), class document dated 2024 on the rule book page, International Jet Sports Boating Association, 2024; sanctioning body, high. The current Ski Modified class document, held here as a text copy. Its first line reads 2023 Ski Modified while the file name on the rule book page says 2024. Used for SKM.1.1 and SKM.2.2, which admit IJSBA approved aftermarket hulls and top decks bearing recognized hull identification numbers.
  • IJSBA Ski Grand Prix document 2025 (ijsba.com): IJSBA Ski Grand Prix (SKGP), 2025 class document, International Jet Sports Boating Association, 2025; sanctioning body, high. The current Ski Grand Prix class document, held here as a text copy. Used for SKGP.2.2, which requires aftermarket hulls and top decks to be approved through the Aftermarket Hull Homologation Process, and for its 97 inch limit on an aftermarket hull.
  • IJSBA Ski Superstock document 2025 (ijsba.com): IJSBA Ski Superstock (SKSS), 2025 class document, International Jet Sports Boating Association, 2025; sanctioning body, high. The current Ski Superstock class document, held here as a text copy. Its opening says the class restricts build costs by prohibiting aftermarket hulls.
  • IJSBA Runabout Open GP document 2024 (ijsba.com): IJSBA Runabout Open and GP (ROP), 2024 class document, International Jet Sports Boating Association, 2024; sanctioning body, high. The current Runabout Open and GP class document, held here as a text copy. Used for ROP.3.2, which allows aftermarket hulls on watercraft homologated in numbers of 500 or higher when approved and homologated by the association.
  • IJSBA Sport GP document 2025 (ijsba.com): IJSBA Sport GP (SPGP), 2025 class document, International Jet Sports Boating Association, 2025; sanctioning body, high. The current Sport GP class document, held here as a text copy. Used for SPGP.3.2, which allows aftermarket hulls on watercraft homologated in numbers of 500 or higher when approved and homologated by the association.
  • PWI Team Butch news 2001 (web.archive.org): Team Butch Closes Its Doors (Personal Watercraft Illustrated online news, Wayback capture of 5 April 2001), Personal Watercraft Illustrated (watercraft.com), 2001; editorial, medium. A news item on the magazine's site reporting the closure of Team Butch, or Butch's Jet Ski Shop: first opened in 1979, its original owner, its sale in 1999 and its riders. Captured on 5 April 2001; the page prints no date of its own. Medium as period trade press.
  • Watercraft Journal on R&D 2018 (watercraftjournal.com): R&D Performance Products Closes Its Doors After 30 Years, by Kevin Shaw (The Watercraft Journal, 5 September 2018), The Watercraft Journal, 2018-09-05; enthusiast media, medium. Report of R&D's closing on 27 September 2018, calling Glenn Dickinson its President and Bill Chapin a former Performance Jet Ski technician and Dickinson's partner, and printing the closing statement signed by Dickinson. The news was first reported by jetskiworld.gr.
  • Watercraft Journal Skat-Trak 2022 (watercraftjournal.com): Skat-Trak Closes its Personal Watercraft Division, by Kevin Shaw (The Watercraft Journal, 21 December 2022), The Watercraft Journal, 2022-12-21; enthusiast media, medium. The magazine's report of the end of the company's personal watercraft division, with the letter signed by its president printed in full. The letter gives 9 December 2022 as the last day of sales and lack of sales, overseas production and the poor economy as the reasons; the editor's own paragraph adds other causes in the magazine's voice. Medium as trade press; the letter inside it is the company's voice. The editor's address is replaced in the held copy.
  • Watercraft Journal Skat-Trak visit 2014 (watercraftjournal.com): Spin Doctors: Inside Skat-Trak Performance Products, by Kevin Shaw (The Watercraft Journal, 27 August 2014), The Watercraft Journal, 2014-08-27; enthusiast media, medium. A visit to the company's Calimesa headquarters. Medium as trade press for what the author saw and was told; the company's account of its own age and history is low. Two paragraphs about the author's family are replaced in the held copy and nothing from them is used.
  • Skat-Trak website About page 2026 (skat-trak.com): About | Skat Trak (Skat-Trak website, read 5 October 2026), Skat-Trak; manufacturer primary, medium. The company's current About page, read on 5 October 2026: its navigation lists paddle tires for motorcycles, UTVs and ATVs and its text dates a snowmobile conversion kit to 1968; it names no watercraft product. Medium for what the page shows today; its history is the company's account and low. Two street addresses are replaced in the held copy.
  • Watercraft Journal RRP Thailand 2023 (watercraftjournal.com): Rick Roy Products (RRP) Ceases Rickter Production at Thailand Facility (The Watercraft Journal), The Watercraft Journal, 2023-05-02; enthusiast media, medium. A trade report printing in full RRP's release of 26 April 2023 on the end of Rickter hull production in Thailand. Medium for the magazine's own lines; the release inside it is the company's voice.

Changes to this chapter

  • 2026-10-07: The hull makers section now names Nick Barton, who has a Key Figures record since the third set, as The Watercraft Journal named him in March 2017. The page now says under its banner that the BaddJet shop sells Factory Pipe parts, because Personal Watercraft Illustrated's May 1996 Factory Pipe test, cited in the section on what each tier let in, carries the maker's name.
Cite this page

“The aftermarket: hulls, rule books and closures”, BaddJet archive, https://baddjetarchive.com/racing/history/aftermarket-hulls-rules-and-closures/

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1996 to 2026 · 5 sections · 1 contested · 6 claims held back

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