Part of the issue with f16s is the lack of a feeling that the sails designed for 2 up sailing is adequate for uni sailing. I don't think anyone sailing an a cat would think a sail cut for use with a Jib would perform as well on their boat. Now, an f16 isn't an A cat, but you get my point. Obviously the boat that brought this all up is slop rigged... but those of us sailing the boat mainly uni are wondering whether the higher aspect mains ala A cat would be better.