Olympics should prove the might of the sailor, not the tricked out boat. The jockey, not the horse.
My suggestion might be to use a simple boat and rotate them each race, or every couple of races.
Best boat would be a Wave,
However, I would not be in favor of that, as I wouldn't want to see the class get ruined. <img src="http://www.catsailor.com/forums/images/graemlins/wink.gif" alt="" />
Rick