The key is that we partner only with established classes. The problems we had in the past stemmed from the fact that the invitation was open to every one-off design on the market. This allowed new classes to use the HCA to build their new class from scratch. This made it too easy for a new catamaran class to get started and as a result we had too many classes and not enough sailors to fill most of them.

(You also start to have a bylaws problem when the established classes do not include Hobie built boats. In my opinion this is not a problem with F18's and Waves)