Guess you are right Dave,
if my son turns out to like racing, I guess he needs to go with whatever gives him the best competition at first. It would probably do him little good if he was the only one sailing a small cat. OTOH, a small cat would definitely have an obvious 'coolness' advantage.

Good point on the Nacra vs Hobie. Beauty is definitely in the eye of the beholder. (My first cat still IS a Nacra 5.2 BTW)