Thanks Bill, I'll get in touch with Tom and see what he says. But have you seen a spinn on a 15 or would it not have enough waterline to benifit from it considering the cost. The boat is quite fast but I am getting overtaken on the downwind runs. Maybe it's my sailing, but it seems that the sail is very flat with not much curve to it, and with light wind it seems a little slower.
Thanks again for the info.
Heinz Smith
Fleet 42
Supercat 15 and 17