It is either that or the fact that alot of monohull class rules and handicap rules are written in a way that only used the area of the triangle between mast, deck and forestay. This same rule resulted also in designs with small mainsails and huge overlapping genua's. These setups were ONLY faster because the area of the overlap was not taken into the handicap rule while the total mainsail area was. If the rules were written to use actual area's then a larger mainsail and smaller jib would have proven to be faster.

Guys, alot of design features are the result of how the class/handicap rules were written not per se because it is aerodynamically better.

Wouter