ghost4man said..Yeah I knew what you were talking about
Oops, the "you" was for other readers that may not have been aware of the new dimple fins.
Anyways, based on my experiments with sanding fins & hulls, I would say that I expect only a marginal improvement from dimpled fins. However, a dimpled hull (not the angulo 10 cm wide dimples, but the same size as the golf ball dimples) would be really interesting to try. Sanding your fins gives you a marginal improvement, not worth ruining the looks of beautiful fins in my opinion, but you will feel the improvement in sanding your hull & rails to a point where water hosed on it makes sheet of water, not beads. Sanding opaque fins like the C-Drives is a no-brainer however.
After sanding the hull, the board will seem to "squirt forward" more easily in turns for instance. However, I only did it on opaque boards that are not already rough enough "as is". I do not think it is worth ruining a nice glossy finish, especially over decorated blanks, or apparent carbon fiber or wood.
Sanding the paddle blades should make sense too (to waste less energy thrusting the blade in and out water), and is easier to make than dimpling a blade as quickblade did. I tried it, but I must admit I didn't feel a lot of difference, but I do not race so I haven't really measured the gain.