I've never had anybody sitting in my stand but I have had them set up their stand anywhere from 20 to 50 yards from my stand. One fella told he didn't care it was public lands and he could hunt anywhere he wanted.Those disputes are prehandled in Colorado. Here's the regulation for state Parks and Wildlife owned land.
I don't particularly agree with this but OTOH, I don't use tree stands or blinds that would be left while I'm not using it.
Does not appy on federal public lands.
"Only portable blinds and tree stands for big-game hunting can be erected on CPW land, and no more than 30 days prior to the season during which they will be used. No nails can be driven into trees. Man-made materials for blinds or stands must be removed within 10 days after the season they are used in ends. The owner’s CID number and dates of use must be visible on outside of portable blinds or underside of tree stands. Placement of blinds or stands does not reserve them for personal use: They may be used on first-come, first-served basis."
I don't like it, but it is the law.