RE: Tree Stand Ethics
The only thing I would recommend if it is public land, is to check your local laws regarding leaving stands on public property. Some areas it is illegal to leave it without name, address etc, and some area don't allow them to be left at all. On the other hand, if there are already that many stands up in that area, then I would want to get the heck away from it anyhow. But if it is a good spot, and no one seems to be hunting that area, then pack your stand in,hunt, and pack it out (assuming you have a stand that you can easily do that with).
--Man who fish in other man's well often catch crabs--