When I was 16 and living up in the north woods of Wisconsin there was an orthodontist from the southern part of the state that bought an old farmhouse with a couple hundred acres near our property. He then proceed to buy up a few thousand acres of old logging land all around out township and neighboring ones. He established a wildlife sanctuary on this land.
As he was not around for most of the year nothing changed for me as far as hunting and fishing that land was concerned, other than I could now walk on nicely mowed paths where he had had the brush filled old logging roads cleared. Then one day as I was cutting across the field right by the old farmhouse carrying a nice pair of ruffed grouse, a single engine Cessna came in for a landing and stopped no more than 100 feet from me. Figuring I was busted I walked over to the plane and said hello as the pilot was getting out. Turned out that he was the orthodontist coming to visit his property for the weekend.
After we introduced ourselves he said it looked like I had had some luck hunting that day. I told him, yeah the birds and rabbits sure seemed to like the new clover on the trails. He asked where I got them and I was honest about it, explaining exactly where I shot each bird. He never once mentioned the "No Trespassing" signs nor the "Wildlife Sanctuary" signs. Instead, he said he had been thinking that he ought to hire someone to kind of look after the property and make sure nobody was damaging the place or creating any unsafe conditions. He said that as I seemed familiar with the land around there maybe I would be a good one to do that for him. I asked if that meant I had to stop hunting his land, and he said, "Well, in order to have the permits for the sanctuary I have to prohibit hunting, but if I don't see it, I guess there's nothing to be done about it." He was a smart man, and for the next three years I made sure I was the only one hunting there. I also took it seriously about the damage and safety stuff, and let him know when something was getting out of order along those lines. (Mainly snowmobilers from the cities coming up on the weekends and tearing the trails up, but that's another story.)
We developed a friendship, and when he undertook creating a couple ponds to expand the wetland areas on his property he paid me well to work with him in doing that. His plan was to retire there when he finished his career, but I moved away about a year after graduating high school so I don't know if he ever did. I do know that a couple years later when my folks sold out and moved to California it was a colleague of his that bought their house and land.