So this thread got me thinking, I have an old one of these...http://www.ratpadz.com/ It just happens to be the right size to fit into my pack as a type of support. With the contour against the tree and tied with a bungee cord or shock cord and supported in the front with a trek pole or something along those lines.
I have seen some sorta like this but made of metal, I already have this piece of useless plastic on hand and it is pretty light, And above all I can do this on the cheap. =)
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