I have only had that happen once. I was sitting in my stand one evening and here comes this guy walking down the trail right in front of my stand. When he gets close enogh I say " Hey do you have permission to be here" and he says " Sure do, I hunt here every year" . Well I proceed to him that the landowner had told me that me and my 2 hunting buddies were the only ones that had permission to hunt his property and if we saw someone to ask for written permission. The guy said he didn' t have it on him and I said well I have his phone number on my cells speed dial lets call him. The guy left