The Inter/F17 class in Australia is becoming a Nacra development class, they do change them alot here, now they are going to fit wings onto them.
F17>/<F16.
There in lies the basic problem with the bris cat center... they keep changing the boats! in all "thier" designs ie nacra 14sq 16sq 5.0 5.8 there are different lay ups of the boat producing radically different stiffness and hull weights. even the spars and foils have undergone change so older boats are completely different to the newer ones.
when you go racing on them you are not on a level playing field at all.
the only nacra I would contemplate is an infusion as they have to measure, all the rest are a waste of time.