IJSBA · Hull and handling

Rider-controlled or automatic trim tab system, IJSBA

The narrowest legality of any handling part.

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This is one body's answer, not the sport's. You are bound by whichever body sanctions the event you enter. If you race more than one series, build to the stricter answer. The differences are set out in the rulebook comparison.

Where it stands, class by class

20 classes, grouped where the same rule gives the same answer rather than listed one by one, because an answer that holds for a class usually holds for every class that borrows its rules.

What each answer below means

Not legal

This comes off. The rules refuse it in this class.

Not permitted, not listed in the rules

Treat it as coming off. The class requires the craft to stay stock except where the rules allow otherwise, and this part is not on the list, so this is our reading rather than a rule we can quote at you.

Legal

Keep it. The rules permit this part in this class.

Not legal 7 classes

Manual or automatic trim tabs attached to the hull or ride plate are prohibited.

• Sport Spec · section headings, no numbered rules
• Ski Modified · SKM.2.7
• Runabout Limited · RAL.2.6
• Vintage SC · VSC.2.7
• Vintage X2 · VX2.2.7
• Runabout Superstock · RSS.2.6
• Vintage Ski · VSK.2.7

Not legal 1 class

Hull extensions and trim tabs may NOT be used in Ski Lites, though mounting brackets may remain. · SKL.2.7

• Ski Lites

Not permitted, not listed in the rules 8 classes

Not listed in this class document. Illegal under the closed-list principle.

• Fixed Steering Ski Stock · FSSK
• Runabout Rec Lites · RRL
• Ski Stock · SSK
• Vintage Ski Limited · VSKL
• Four Stroke Ski Lites · FSKL
• Runabout Naturally Aspirated · RNA
• Runabout Stock · RAS
• Ski Superstock · SKSS

Legal 3 classes

Fixed, automatic OR rider-controlled all permitted.

• Freestyle · FREST.2.7
• Ski Grand Prix · SKGP.2.7
• Sport GP · SPGP.3.6

Legal 1 class

The Limited/Superstock ban is lifted here. · ROP.3.6

• Runabout Open / GP

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Rider-controlled or automatic trim tab system: if the rule your class applies reads differently to you, or the rulebook has changed since this was read, ask. We answer with the section we read it from, or that we have not read it. Ask a rules question.

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