Speaking personally , I just don't get them . The way I look at it would'nt a dolphin have soughted this option out eons ago . If I want base width I'll chuck them in , if I want rake I'll again chuck them in . What are you going to try them on Beanz surfboard or kneelo ?
i'll give them a crack both standing up and kneelowing, just something to muck about with, i'd prefer to get a set of very flexiblefins as per Blair, they make more sense...Blair got air up at Bombing range the other week (but was that the fins or Blair)