The StingRay Stinger was designed for speed and versatility. Its delta-wing profile reduces drag while the extended wing tips deliver increased stabilization. Stinger was designed with the patented No-Drill Technology that can be used on engines 40 horsepower and greater. Smaller engines on tough-to-plane smaller boats can still reap the Stinger's benefits by utilizing half the holes a competitor hydrofoil would require during traditional bolt-on installation. Hardware for bolt-on installation also supplied. Plane quicker, eliminate chinewalking, wipe out cavitation, stop porpoising. 4hp-300hp.