Sorry for the confusion. I don't know why the manual lists the main cable as having 2 loops in it as you only need the one loop to set the system up. Steps 4-6 in the instructions tell you how to set up the lower part of the cable (the one without the loop) with the U clamps: <br/>4. Stretch the end of the main cable across to the finish point anchor and <br/>cover the area of the cable that will contact the tree with the rubber <br/>guard. Wrap tightly around to create a tear drop shaped loop (this will <br/>require 2 people). Do not form a tight circle against the anchor as this <br/>can cause stress on the Skyline Zipline Kit parts. <br/>5. Use the U clamps to connect the main riding cable (place in groove of <br/>clamp) to the end piece (lay on top of main riding cable and secure <br/>with U shape screw so that threaded ends point to the ground). <br/>6. Place the U clamps 2-3” apart to attach the Skyline Zipline Kit to itself and <br/>tighten all nuts to secure in place