Nice job Dave, I think we are going to see more of this sort of concept in the future. They work seperately and together. When you nose ride you need some water over the tail to hold you in and a big concave nose helps. And when you want to jack it around , the nose is out of the water on a board this size and the fins do the work like a modern quad fish should. Seems simple enough to me Dave. Good one Mate.
