TempestThe Tempest turns the 850 into the ultimate pelagic glider. While the Small Ahi tail provides the ideal balance of stability, turning response, speed, and glide for aggressive wave foiling the Tempest's design is solely focused on high speed glide. While compromising the agility and comfort of the stock 850 setup is not for most, those dedicated to fast downwind runs will get the glide of a significantly higher aspect foil while maintaining most of