I've always wondered since peoples property is by default considered public property unless otherwise marked, there should be nothing stopping anyone from entering a house not marked with a proper no trespassing sign, same with cars etc. I know when I was a kid when we'd put up signs before hunting season, they were all either torn down or shot to shit by the first day of hunting. Basically had to put up signs almost daily & be driving around keeping an eye on things. Private property should be private. If you want people to hunt on your land it won't be hard to get hunters to come to you.