The displacement tail extreme pintail design part 2

The first thing which comes to mind is that because the extreme pintail with soft rails develops very little planing lift ( at least progressively less towards the tail ) it maintains the same handling characteristics at high and low speeds.With displacement lift the amount of lift produced by a given displacement is constant, it doesn't increase as the board goes faster. With planing lift the amount of lift increases as the speed increases.So, with a planing tail the handling characteristics change as the board speeds up.. . the tail gets harder to sink and the board gets harder to control. With a displacement tail that doesn't happen.The displacement tail is all about ease of control and minimising the drag caused by turning and repositioning the board.It's also worth mentioning that lift due to displacement can be gained with less drag than planing based lift, so there is a possible drag advantage with displacement hull features. .. . we hear a lot about how planing hulls require sharp edges for release to minimise drag but in fact displacement hulls are more effiicient.The boards which we design with displacement tails are still primarily planing hulls of course.