Master Pull 20 foot and 30 foot 28,500 lb. Super-Yanker Tow Ropes. Once you use the Master Pull tow rope, you’ll never use a strap again. Unlike conventional tow straps and chains, the Super-Yanker uses the power of kinetic energy. The Super-Yanker stretches up to 30% when in use, which greatly aids in vehicle extraction, and gives the Super-Yanker excellent shock absorption. The Super-Yanker is made of two ropes: an inner core for strength and an outer cover that protects the rope from the elements and adds extra strength.