Universal Contour fits 90% of all inboards. (Quad Contour fits any boat with tapered pylons & windshields that extend up to 8" behind pylon.) We don"t compromise safety for anything. That is why we use 2 stainless steel cables and our boom clamp has no moving parts that can loosen up and cause the boom to break free from the boat. We also have a high quality airline quick release pin allowing you to put the boom on & off in seconds.