We just had a incident not far from me where my family goes on a float trip every year. This year there was a guy standing on the sand bar with a gun on his hip. We talked to him for a while and floated on. We didn't even think about the fact that he owned the land surrounding the river as it was a popular place to stop and take a break nor did he mention trespassing. A month or so later things got heated with some drunk floaters and he shot one in the head. He says they threw rocks at him as they came closer. The local community is supporting him pretty strong but it doesn't look good