So you want to turn the F18 into a lightweights boat? keeping the weight up not only negates the expense of using 'exotics' but enables a good range of crew weights for competitive racing. Over the years F18 has succesfully attracted sailors from a number of other classes due to its non-extreme rules. It IS a successful formula. Want a light boat? F16, A-class, Shadow.......

Cheshirecatman