Matt Brown, Supra/Moomba Product Development Manager: It's a lot of trial and error. The lifting, the strength locations, the chines, the deadrise -- we don't do any of that in CAD. With the fluid-dynamics technology today, you can use computer models to tell what's going on right at the hull, but you can't tell what's going on 80 feet behind the hull. That just has to be felt. The theory can't be tested in a model.