A pulley would be good a idea. I usually just to get the height I want and pull the stand up (attach the rope to the stand before I climb). Sometimes I'll screw in an extra tree step above the location I intend to hang the stand. This gives you a tie off once you pull the stand up and it's above the stand location which should make it easier to hang the stand (while it's tied to the step). Then remove that step and use it for a gear hanger or remove it all together.