"Inflatables and Dingies - Even with the concentrated weight of the engine, fuel supply and driver sitting in the stern, the bow will not rise. The ULTRA FIN FX will increase stability and reduce the chance of flipping in rough water or high wind. Fishing Boats-Lakes, rivers or 100 miles off shore you’ll enjoy a level, more stable boat at trolling speeds and never lose sight of the horizon. Even with oversized fuel tanks, bait wells, ice, and all of your buddies, the ULTRA FIN FX will stop your boat from looking like it’s heading for the moon. Pleasure Boats - Get on plane and stay on plane without moving passengers and equipment around to balance out the weight. The fuel savings you’ll experience will be unbelievable. You won’t go crazy adjusting engine tilt and trim tabs every time you change your power setting. Set your power level where you like it, and water conditions necessitate, not where the boat demands! Ski Boats - Pull out skiers in half the time without the stern digging in or the bow rising. Increase prop pitch for more top end and still pull out slalom skiers with no cavitation. Slow down and stay on a level plane for beginners, kneeboarding or tubin"