As someone who hunts a majority of the time on public ground, this is really an interesting topic to me. And coming from that background, I agree wholeheartedly that we shouldn't leave stands up on public ground unless we're hunting them actively, and by that I mean, you hunted it an evening and are coming back the next morning kind of thing.
Come on folks... the beauty of public hunting ground, and thank God we have it, is that any of us, regardless of your means or lack thereof, can go out and have a place to hunt... AND... we all have the same right to it.
I, the same as some others, feel that hanging a stand and leaving it there [on public ground] is tantamount to "claiming" a spot, whether the hanger means it that way or not. Some that have said they don't think they are claiming a spot when they leave a stand have also said they don't think it should stop somebody from hunting the same spot (not in their stand) if they're not there. Well, the fact is it does. Some of us are just too polite. We find a stand up in a place where we were planning to hunt and we either don't want to seem rude in case someone shows up, or we don't want to have our sit ruined when the owner comes walking in right in the middle of prime time. Either way, it forces us to go somewhere else. Another thing to think about for those that think leaving a stand doesn't claim a spot, is the idea that maybe that tree [where your stand is] is the best, or only, stand site to take advantage of that particular spot. Again, having the effect of denying someone access to a spot that they have as much right to hunt as you do.
On public ground, "first-come first-served" should only count for when you are actually there. None of us can claim we "found a spot" first, [on public ground] anyway. The only thing you can claim is you hung a stand first. And besides that, going back to the beauty of public ground, whether you like it or not, the guy that just likes getting out every once in awhile, and bumbles into some spot has as much right to hunt it as the guy who found it by meticulously scouting six months out of the year.