Ever try to put a spinnaker on a Nacra 18 Square? SNAP!! There goes the mast. I know how much fun it is to run a chute. We run a 540 sq. ft. Smyth chute on my Supercat-20 but it is not pratical on short bouy courses so we sail the Supercat on distance races and the 18 Square on bouy races. My vote is for an offset B mark for bouy racing for two reasons:1- unirigs don't do well downwind and 2: It's more fun which is the reason I sail...
Don C.