Why stop at asymmetric fins. The asymmetric board aims to reduce drag by moving the lift forces more into alignment. Hence Oldies idea of offsetting the mast base so the sail can be raked further. The fin is adjustable on the fly with a spring return. Kick off the ratchet and ease back foot pressure and it will return upright for rough water, or the other tack. The width reduces from 50 to 25 cm at speed
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