If there is any insecurity (I don't think there is) it may be due to the fact that Hobie and Nacra do not produce an F16 boat...yet.

People who are new to cat racing usually want a big brand name product to feel secure in their purchase. And the F18 class has been around for 10 years (or more) so there is some competition for new customers between the F16 and F18 class. Hobie and Nacra both produce F18's, and are they ever heavy!