Mystere Twister (F18) came out with gybing boards. However no catamaran has yet proven that gybing boards are advantagious. On monohulls (only one board to worry about) it is sometimes used.

Canted ? Most F18's have done away with hull canting. There doesn't seem to be to much performance gain if any. Non-canted hulls are cheaper to produce (need only one mould) This is one reason why current F16's don't have canted hulls. With the F18 world champion boat of the last years being non-canted designs : Tiger and Cirrus F18's and to top 20 being dominated by non-canted designs. One can have a good argument of whu canted hulls are not needed.

Wouter