Anybody got a copy of ISAF Equipment Rules for sailing?
Look up hydrofoil.
Then look up daggerboard and rudder.
I just did that.
The daggerboard is defined as "a retractable hull appendage, attached aproximately on the hull centreplane and not rotating, primarily used to affect leeway".
The rudder is defined as "a movable hull apendage primarily used to affect steerage"
The words "hydrofoil" and "foil" are not present in the document.
The axis are referred to the waterplane with the boat in measurement trim, not the waterplane when moving.
I see nothing there very helpful to prevent lift generating devices.
All the best.
