re: Ever catch people you know on your land?

A couple of years ago I went to the farm before daylight and turkey hunted that morning with no luck. The Tom's stopped gobbling and and I figured I could go mow the yard and eat lunch. I finished my lunch and was sitting on the back porch when a Tom gobbled right behind the house by the creek. I grabbed my shotgun and camo and tried to close the distance. I was down in the creek and was within 100 yards and he quit. I hit the slate a few times with no answer. I came out of the creek and the pasture where he had been and there was no turkey to be found. I thought about it and he should be right there. There was a ridge between me and the south property line. I walked to the top of the ridge to see what was there and to my surprise there was a guy medal detecting out in the middle of the pasture. He had head phones on and was busy and not paying attention to anything but his medal detector. He gets a hit and starts to dig. While he was digging I walk up within 5 yards of him. He finds a civil war 58 cal mini-ball. He looks up and I am standing there with my turkey gun on my hip. He looks like he has seen a ghost.
He is in his mid 60's and knows better. I ask him if he knows who's land he is on. He shakes his head no. I ask him if he has permission to be medal detecting? He said no again. I said I know and sleep with her every night. I asked him where he came on the property and he walked me to it. I told him that what he was doing was stealing and what he was caught doing gave metal detectors a bad name. I took the mini-ball from him and told him my son medal detects and he stole the privilege of him finding the mini-ball. I fixed the hole in the fence and doubled the amount of no trespassing signs up around the property. I hope and pray that I do not have to do it again.