To determine which iSUP fin replacement is appropriate for your inflatable paddle boards, see our Tower iSUP fin replacement page.
SUP fins provide stability and traction to your stand up paddle board. Fins aid in steering, and paddling in a straight direction, allowing you to stand up paddle surf without spinning out when you turn. More fins in the water = more traction and grip. We highly recommended that every stand up paddle board should have at least one fin installed while in use.
While the pros and cons of SUP fin configuration is up for debate, it's pretty well agreed upon that a single long stand up paddle racing fin (8-10 inches) is best for flat water cruising, and a 2 + 1 or three fin set-up (which is a 6-8 inch center fin flanked by two smaller side fins) is best for stand up paddle board wave surfing. When surfing you really always want at least one fin and rail to be in the water for glide and traction at all times. The two smaller front fins on a 2+1 set up will allow there to always be at least one fin in the water providing that traction while you are surfing even on the rails of the board, and ensuring your board doesn't "slip out" and lose traction on the wave. The 2+1 set up is great because it has that strong center back fin as a pivot point for the board so easier to turn on waves, but still provides enough traction for wave riding with the 2 side fins.
The best stand up paddle boards have a removable fin configuration that allows the user the flexibility to install paddle board fins specific to their preferences, which can change from day to day. Our fin setup on all Tower paddle boards allow users to experiment with different length fins.
The sup replacement hook + pin fin is our standard iSUP fin that comes in each iSUP package. This fin latches onto our iSUP fin box by way of the attached pin, popping into place. It is our best and most versatile fin used on our iSUP's.
The river sup fin is good for use in shallower waters. With its height being only 6 inches, you no longer will have to worry about scraping your fin on the bottom of the lake or river. What it lacks in height, it makes up for in width. This fin is still extremely stable and provides a great sense of traction when sup touring along the water.
The stand up paddleboard replacement fin is a classic hard top stand up paddleboard fin which uses a screw and bolt to lodge and tighten the back fin into place. This cannot be used with iSUP's, only hardtop paddleboards.