It's not just public land it's hunters in general. I think there are too few of us ethical hunters with common courtesy. Hell I think there are enough ethical humans with common courtesy....isn't that sad. I've run into similiar situations when others have permission to hunt the private land that I sometimes hunt. I just shake my head. Currently I have an exclusive property for archery...the landowner hunts rifle, sometimes and only from his truck or scaffolding stand....I post, plant food plots, patrol, fix, assist, and preserve the property. I'd hate to loose it.....it's produced my 3 wall hangers, my two coyotes and is holding my big 10 for the second year. I know my stands are there, my camera unless someone trespassed to take them and that's not likely....hang in there guys, use the off season to scout some private property...good things come to good people...remember that.