"my personal favorite: you let one guy hunt and next thing you know the whole town is there. Because a friend of a friend of a friend said it would be ok to hunt there."

We were just having a discussion about printing up personalized hunting permission slips with photo ID that can only be used by the person it's issued to - HA!.  In the past we've given a map to select people so they know which farms they are allowed to hunt on.  One time we had a total stranger hunting on our land and we asked him who gave him permission and he said "the owner" and he proceeded to whip out a copy of our map.  Who knows which person made the copy but we'd like to get out of allowing hunting entirely.  This year we gave a guy permission but then he passed that permission to a young nephew.  Gets irritating and you feel used.