The A cats dont use jibs becouse the sailarea is used more efficiently in a taller main with higher aspect ratio = better performance upwind. Put in a reaching leg, and the jib will be good to have.

I guess a much lighter A-cat with larger sailarea and 2 feet longer hulls will leave an F-16 without kite behind at the top mark. But the F-16s are allowed to use a kite, so.. <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />