If your boat does not have a center tow pylon or a center towing hook (most older I/O’s, outboards, and pontoon boats), then you probably need a ski tow harness to equalize the pull of a skier/tuber/wakeboarder, etc. This is our least expensive option, and it does its job quite nicely. 8′ width, with two high-strength coated steel snap-hooks. A vinyl float to keep the rope out of the propeller. 12 Strand x 84 Filament Polypro Rope