I believe in symmetry. And rely on only the angle of attack to adjust the pitch. A wing with positive lift likes to pop you out of the water and stalls. That makes it harder to ride.
Hawaiis wrote:Yes, except"the front foil will llikely have best trim angle at 0-2 degrees.
it will also generate at bit of forward pitch moment that will tends to nose dive the board."
If there is any positive lift profile on the front wing, the positive lift will increase as speed increases. A symmetrical wing will rely solely on the angle of attack and will require a positive angle of attack to lift off, this angle will actually prevent the nose dive of the board compared to the asymmetrical foil.
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