With all the arguments about weight I'm starting to think that maybe adding a lead keel to the F18 would level out the playing field even more... Just like it has on Mono's. Reckon that would see us back in the Olympics in no time too!
To tell you the truth, I think sailing should be all about brains, not brawn. If a level playing field is desired in OD racing I'd prefer crew weight categories, like they have in boxing or wrestling.
As to heavier boats being cheaper to produce, I don't believe it, unless they're made prom paper-mache(sp). All that resin has to cost a lot, I'd rather pay for some extra carbon than 20 extra liters of epoxy!