So, as I understand some folks in this thread, If I have a Prindle 16, then I can sail the Hobie 16 Nationals, a NACRA 5.2, then I can sail the Hobie 17 Nationals, NACRA 20, then I can sail the Hobie 20 Nationals, Etc. I'm confused, all of the racing classes I know of have certain rules, NASCAR won't let you bring your F-1 car to run in their events, SCCA Formula Ford won't let you run a Formula Atlantic in their races either. Rules are rules, if you want your own "Different class" cool, but don't expect everyone else to agree to buy all new equipment just because you want to. And BTW, I own a Hobie 14 Turbo that can't race in the class, I have an illegal jib, 6 to 1 Harken low profile blocks and homemade "Anti-Dive planes", all three make me Not Class Legal!!!