Hi Barry

What formula are you using?

Setting a spin size for the N6.0 so that it is level in performance to the I20 is an excellent work-around but I am not sure how it equates to a formula that new designs would be optimized for.

I also wonder how a 6.0 with the large jib could ever be made to handle as well as an I 20 or Tornado with a self tacking jib. With equivalent teams on the boats, the 6.0 must be at a disadvantage going around a small WL course. My Tornado without the self tacking jib was a nightmare!

On the other hand, strait line speed could well be equivalent in most conditions between the two boats.
What basis do you decide to declare the two boats equal in performance, strait line speed or speed around the course?

Take Care
Mark