I agree with Mark on the whole Portsmouth vs. any measurement rating system. Portsmouth works -ok- but it depends on input from race/time results, where skipper, crew, wind and water conditions is always a variable.

More input provides more accurate ratings, but with so few boats racing in some of the categories...there is not enough accurate input to come up with an accurate number.

Being a math guy, I've always believed there should be a formula that would take some of the basics like sail area, weight, hull length, beam, etc. and come up with a rating for just about any sailboat.

I'm sure if we put someone like Pete Melvin on it he could come up with a pretty accurate speed prediction type formula to rate racing cats. Portsmouth, especially in a small fleet, is a little vague in my opinion.