Given that the F18 class is a development class, newer designs should be faster than older ones. So what do you think would be the speed difference between an Inter 18 and the Nacra F18 that replaced it. Let's assume that the Inter 18 has been brought up to date with spinni chute - the big difference being the hull design. Also assume the use is for upwind-downwind courses.

If you had to offer a handicap rating to even things out, what would you suggest, compared to 1.00 for the Nacra F18?

Cheers
Simon