For those that have a lot of hang on stands in the woods, this would be a neat set up. It can easily just be hooked to your safety vest and you're tied in from ground to ground. I have these in throw bags to use as rescue thingys while ice fishing. Good quality ropes.
http://www.summitstands.com/productdetail.aspx?id=329148

OH, here's the single version I use while ice fishing also. LOL

http://www.summitstands.com/productdetail.aspx?id=329141