FCS II Fin Clinic by Hawaiian South Shore While much emphasis is put on the rocker, rails, volume, bottom contours, and the various other aspects of board design, fins are hardly ever discussed. And yet they might just be the most important part of a surfboard. After all, they literally allow us to steer our boards through barrels and turns!  Fortunately for those of us who like to experiment with different designs, removable fin systems make it easy to do. FCS has been a leader in the removable fin system market for decades, and the current FCS II collection features...