I do leave stands up, sometimes just dont get around to pulling them all (usually have 8-10 out)watch for the tree growing and making the chain so tight ya cant get it off the tree. I have had this happen several times in the river bottoms where I hunt, not so much in the hills. It can easily happen in a years time, leave it 2 and the dang tree will start to grow around the chain, usually have to cut the chain off the stand to get it. Ya need to inspect them or like you said re hang them every year though.