We had our tow line made by the folks at National Marine Suppliers in Fort Lauderdale. For the main line, we use a 12-strand plasma line 58 inch by 100 feet with soft eyes and chafe gear sewn on both ends. This rope boasts a tensile strength of 51,400 pounds. The plasma line reduces stretch and decreases drag since it sports a smaller diameter to tensile-strength ratio. At the front end, we attached two 60-foot harness lines made of 118-inch, black double-braid nylon, with a soft eye and chafe gear on one end to connect the main line, and with the tow-boat ends whipped and left open for easier adjustment on board the tow boat. The nylon harness lines have a tensile strength of 44,900 pounds.