The StingRay XRIII Junior Hydrofoil Stabilizer is one of the most effective and affordable ways to improve your boat's performance. The unique design captures the prop wash and harnesses its power for added thrust. The StingRay Hydrofoil reduces your bow rise, stops porpoising and wipes out cavitation but aids in pulling skiers. It installs in about 5 minutes with no measuring or layout templates and NO drilling holes--meaning no damage to your engine. The StingRay XRIII Junior gives you best top end speed, fastest holeshot by controlling thrust cone and rooster tail resulting in improved forward thrust.