-Hi Luiz

Bill's the man ,-his years of experience with S C and R C and Arc designs and ready ability with applied engineering formulas make him a logical choice for any contemplating a design to at least consult with on the concept and drawings.

You should contact Dave C and compare foiler notes -he built a foiler A class cat , and is always very interested in the subject.
-Sounds like your describing forward canted dagger boards that would help provide lift along with the chute.
This should not weigh too much .

On foilers I,ve only seen the H trifoiler in action -
The limitations seem to be they fall off plane in seas or gusting conditions and potentially break something at those high speeds .-
Is this foiler problem being overcome in current and new design -?

thanks for the info
Carl