appendages that generate a dynamic lift force component along the axis perpendicular to the plane defined by the waterlines of the two hulls
Ok, so if my foils lift the boat in another plane, other than perpendicular, then I'm ok?
That's what I remember too - like I said, a little clarification in the rule may be in order.
Exactly, the current wording actually banned daggerboards, rudders and hulls - and nobody noticed it.
The new definition would ban "appendages that generate a dynamic lift force
component along the
axis perpendicular to the plane defined by the waterlines of the two hulls."
This bans everything that generates lift more or less in the same direction the mast points - even when the boat heels. The banana boards generate a lift component in this direction, so they would be banned. Normal daggerboards and rudders are aligned with this "mast" direction, so they don't generate any lift component in the direction "perpendicular to the plane defined by the boat's waterlines", so they are allowed.
