I would call that a Formula 13. Or maybe they could sail in the Formula 14 class. IMHO, a Formula 12 should have 12 feet (or about 3.6 meters) as the MAXIMUM for the class. If you are going to have a Formula 13, then even the Wave could sail in it.

Also, weren't some talking about the boat being cartoppable?

I think there is a major disconnect here between the concept of Formula 12 and the concept of designing a new boat for young kids. <img src="http://www.catsailor.com/forums/images/graemlins/crazy.gif" alt="" />