You guys that are talking about climbing back up the tree by hugging it must be alot stronger than I am. Another thought on davidmil's idea would be too carry an extra strap and run it around the tree below you. Attach it to your harness and then climb just enough to get some slack on your rope to un hook it. You would need to be able to get the first strap off the tree, slide down to the second strap and repeat the process. Something to think about and maybe come up with better ideas anyway.