I believe the round robin is modeled after the kind of sailing that occurs at US Colleges and Universities. Boat changes must happen quickly... so .. no modifications other then downhaul etc, etc.
I think most of the teams choose to take the time and race when they believe they will suit the boat and have a fair chance. It does sort of autoregulate the competitior makeup. Wouter is correct.. This years diverse turnout is similar to the year they used the Hobie 16. It should be a great event!
PS... the Lovel and Lovel team has a LOT of talent on that boat. Johnny should be able to hold up his half of the boat! <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" />
GO George and Susan!!