Spinnaker boats put a high emphasis on the crew. I sold my F18 mainly because I couldn't sail competitively with my usual crew (wife or daughter, and all my other friends had their own boats and their own crew issues). I guess it boiled down to I didn't want to take the time to recruit a crew, train with them (on a platform I didn't have access to), and then take the time off to actually attend the event - when I'm already taking off up to 4 - 5 weeks to attend other events either as a competitor or race officer.

If the championship was in singlehanded boats, I'd be all over it.