THE ESSENTIAL ADD-ON FOR YOUR SUP TO AVOID DRIFTING OFF WIND. 99% of all SUP’s and the majority of all modern Windsurfing boards do not feature a daggerboard or centre fin. If you put the iRIG or any other Windsurfing sail onto these boards it is nearly impossible to come back where you started! To solve this issue we are proud to introduce the DRIFT STOPPER. Available from H20 Sports your Water Sports Experts.