When one of my grand daughters was 3 or 4 years old, and she is about 25 now, if a fisherman came by my pier she would holler, "hey man, you better get out of my Paw Paws fish." I have videos of her doing it. Most of the time they would just wave at her and keep on fishing but occasionally one would pack in his stuff and leave. I always figured they were fixing to leave anyhow.
About this same time there was a fellow just up the lake from the Stemly Bridge that put out a string of jugs from the bank and about 30 or so yards around his pier and he would raise holy hell if you threw a bait inside them. I was told that he pulled a rifle on some folks to run them off. Don't know what ever became of that.