To make your bridles, start by cutting a length of Dacron that’s twice as long as you want your finished bridle to be. Double it over and tie an overhand knot with the two tag ends, leaving quarter- to half-inch tags sticking out. Grasp the two sides of the loop and tighten down the knot, pulling as hard as you can without pulling the knot through itself. Next, use a lighter and melt the remaining tag ends of the knot down to where they can’t pull through. Test the finished bridle by pulling on the loop as hard as you can. The knot should not slip or fail.