UIM · hydrofly

UIM Hydro-Fly

UIM2026, 900. The rulebook does not state a governing principle for this class.

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No component rules are published for this class. The rulebook recognises it and gives it no technical rules of its own, and names no single class for it to inherit from. Nothing here can be answered for it, and an empty list would read as no restriction rather than as no answer.

Open questions on this class (3)

Places where the rulebook contradicts itself, or where a figure could not be settled. Nothing in this list is decided, and it sits here rather than in a footnote because it is what you would want before spending money.

• 302.01 lists only Hydrofly Pro Men and Hydrofly Pro Women, while 900.05 defines four categories. "Pro" in 900.05 is presumably the men's class but is not labelled by gender.
• The Junior category is 17 or under while Pro is 17 or over, so 17-year-olds appear in both.
• No minimum weight or sound limit is given for Hydro-Fly.

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UIM 2026, 900, read from the rulebook on 2026-09-08, not verified by a racer. Read the rule yourself, UIM Hydro-Fly. Every UIM class · where the rulebooks differ.

This is one class. Every part below also has a page of its own showing where it stands across every class this body runs, and legality by part is the index of them.