F12 Great Idea! <img src="http://www.catsailor.com/forums/images/graemlins/cool.gif" alt="" />

I’d guess drag is not the big challenge as short boardless cats are a much more difficult to tack, especially without a jib! Rocking horse effect is another matter. What makes you think this design will be any different?

Ease of tacking is an essential element in training new sailors and one reason why the Opti is so popular (less run away boats!).