My buddy told me this story a few times over the years before he passed away(RIP KENDALL). They would go and stay at an old school that had been converted to a b&b in Ree Heights, SD. They hunted almost exclusively ditches by walking them back in the early 2000s when birds were thick, most times they didn't have a dog. One day a truck was following them, just hanging in the distance at 300 yards watching them. It even followed them around if they moved a few miles. Luckily the owner of the b & b was driving them around that day, dropping them off and picking them up when they got to the end of the ditch. Eventually the owner dropped them off in a ditch and drove over to talk to the guy, and the truck drove off. Two years ago in SD we were on a walk in and there was a big volley as we flushed a large flock of pheasants. A few minutes later a truck was up on the road hawk eyeing us! Never did talk to the guy. Maybe he was just bored, or maybe he was watching to make sure we didn't hunt the unharvestred corn. Either way, I never put it out of my mind that even way out in the boonies, people are watching when you least expect it.