When we wrote the F16 class rules we specifically DID NOT rule out any hydrofoil devices. We specifically written the rules such that T-Foil rudders and such were allowed.
The "and such" is a generalisation which doesn't fit into your squeaky clean technical/factual image.
But had a look through the F16 rules. You don't want to hold a F16 regatta in SE Asia. You don't want to see what kind of boat I would turn up with! Would certainly be an exploiter of those rules.
