I have 7 pieces of ground, owned by three different land owners that I hunt with two real good friends. We (the 3 of us togehter) lease from two of the land owners and the other piece is "free" ground. We scout, hang stands and hunt together. So we don't really consider any of the stands as ours. There are specific stands that we each really like to hunt and we ofter referr to those stands as "so and so's stand", but they are not locked down to that specific person. We just talk about it as we are getting ready and make decisions on where to go. We have never had a problem in the past, as I honestly believe we don't have a stand in the air that is "bad".
With that being said, we do invite other friends now and then to hunt with us. When that happens, we tend to tell them where to go. Sometimes the stand we send them to is based on the fact that they don't know the land, so we either take them with one of us and place them in a stand as we pass it or send them to one that is easy to find. If the person knows the land, has been there several time, we let them choose where they want to hunt. Again, never has been a problem.