Gents,

I designed and help build Mark's Inter 20 sails. Performance Catamarans came out with some fat head sails and larger jib for testing so Mark isn't the only one. We made the sails at Schurr Sails out of curiosity to see if overall performance would be improved or if the boat would just be too overpowered. Looking to current sailboard designs, we felt pretty confident the head could be blown off through downhall and we would greatly improve downwind vmg. The squaretop on the jib was a stab at minimizing a choked slot where the jib comes into the mast. I have seen others try it in trimarans since we built Mark's sails.
Big picture- Mark isn't trying to cheat or overthrow any powerhouses. He's a big boy and just wanted some sails with juice and was willing to throw down to try it out.
He takes the rating hit and doesn't complain. Anybody who has a problem with it really needs to get a life.

Any questions, feel free to e-mail me at [email protected] or call at 850-221-8471.

Cheers,
Bert Rice Jr.