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Lone Wolf makes some climbers that are pretty light. I have a Summit climber and it is about 17 pounds, not bad for a short walk in, but with out a proper back pack to strap it to, it gets pretty heavy after about a mile.
Crows Nest makes a nice light stand, and easy to put up too. Just screw in a lag bolt with a piece of square tubing welded to it, hang your stand on it, put the safety strap around the tree, and your done. Some of the models come with packing straps, and some don't but they are handy stands regardless