How many sailing catamarans have Boeing, NASA and the NASCAR guys buildt? <img src="http://www.catsailor.com/forums/images/graemlins/laugh.gif" alt="" />
Not to be rude, but there are differences. As it is, I dont know anyone besides Frank Bethwaite who has done practical tests on this. I am pretty sure there is a point of diminishing returns for going to finer and finer surfaces. But where this point is, is still pretty much an unanswered question it seems.