
a concave creates lift and high pressure under the board, useful for small waves but just about the opposite of what you need once it gets big
my 2 favourite boards both have flat and V bottoms, and they seem to feel much more composed at high speeds than a normal shortboard with concaves
so why do the majority of step ups have concaves?
I've been planning on building a couple of boards over the winter, and one of the designs I've drawn up is a shortish thick step up, but I don't know if I should go with a concave or convex bottom. It's going to be a quad so it will have a small amount of V in the tail either way, and convention says go with a concave, but my experiences say go with a V bottom...
anybody got any experiences with a few different boards in heavy waves and know what works best for certain conditions?