Thought I might also add that the hull is designed from the waterplane down by some fancy method that I got told I wasn't paying them enough to be told about, but if you look at videos of the A-Class there are no broken waves, no quarter waves and the bow wave is an unusual shape, so I guess it works. From the previous they can get all the pressures on the hull and that in turn is added to all the other forces which is probably why they can make the hull look so damped in pitch irrespective of speed or wind pressure.
Aerynt