On a recent scouting trip before opening day of archery in FL, a hunter had flagged several hunting spots with orange flagging tape. (he had to have used a couple 100 foot rolls)...I counted no less than 1/2 dozen spots clearly marked with flagging, as well the trails leading to & fro the spots every 20-25 yards.
We promptly removed some of the orange flagging tape, and will follow the unwritten "rule":
First man to the area on opening morning get's the spot.
(This same theory alos applies to salt water fishing holes offshore - often use public GPS coordinates of reefs, sunk structure, etc... Often we ahve traveld 12=14 miles by boat, only to find a boat sitting in the same spot we were aiming for... Sometimes, sharing the spot is an option, just be as courteous as possible to the other person/group. Of course this never goes over well if you were the first person there.
Here's a final note, and one many hunters will not agree with. I work as a forester, on public land in FL... Tree Stands can be utilized on this public land, but are
not allowed to be left there un-attended... We find the remains of permanent old wooden tree stands (often years old, and also not allowed), on the public land, but occasionally "luck" across the nice new climbing ones... At work, we guys who routinely do prescribed burns/ timber marking, land mgt. etc... also hunt, and utilize this "no stands allowed -un attended" rule to the fullest, and take the opportunity to remove the stands (within reason of course)... We carry them back to the shop, and leave them there for 6 months or so, and if no-one claims them, get to carry them home...
Sometimes we also find tree stands in "No hunting" zones as well.... We don't have to wait the 6 months on those...
Be careful, and know the written rules about leaving tree stands on the public unit you are hunting. (Building permanent stands is often forbidden)