This will be the year I break a bad habit of *never wearing a safety harness. I bought the HSS vest, it came with an instructional dvd but the dvd isnt working properly, tried it in both my dvd players, its all scrambled and skips. I understand how to put on the vest and all, im just confused on attatching the safety line to the tree. I have the cord with two looped ends and the prusik knot/cord on it. Anyone know of a site that has detailed instructions on attatching it? HSS site only has instructions on putting on the vest and adjusting its tension.