What about Bob? Bob is an advanced 4 rider tow rope with an inflatable buoy in the middle that will boost your towable performance to a whole new level. It keeps the rope out of the water while towing which reduces drag, rope spray, and submarining. This 60 foot long advanced towing system (including ball) has 4,100 pound break strength. BOB features a heavy-duty full nylon cover, self-bailing drain vent, and patented Speed Safety Valve for fast and easy inflation and deflation.