#Repost @sftindustrie with @repostapp ・・・ #Repost @hh_sft with @repostapp. ・・・ What is modern surfing all about? Speed, acceleration, extreme turns, right?!? So how can we resist to say that fins systems and fins alignment need to be improved when we see such a swirl/vortex on this side fin? On a fluid mechanics point of view vortices are increasing drag, thus reducing speed and drive. You can observe the same phenomenon on a landing airplane, while they increase the width of the wings and the curve of its profile/foil at trailing edge as to increase lift of wing at low speed and allowing the plane to reduce its speed for landing. But here this is something we want! Not like for surfing, where top notch surfers are seeking for highest speed and flow patterns to achieve extreme moves in the wave. This is where the active fins #speedflowtech make the difference, by aligning themselves to board trajectory and flow, they allow all the fins to drive and eliminate the formation of such vortices. That means minimum drag, maximum speed and acceleration in the wave. #activesurfboardfins #nodrag #morespeed #morepop #powerunleashed #increasedreactivity #modrive #therevolutionisnow #finsystem #surfboardfin #vortex #surfing #wave #surfingsfuture #surfboard #wsl (at San Clemente, California)