I'm a diehard fisherman and bass boat owner and I too not appreciate some yahoo chucking a 1 oz weight with hook mere inches from my boat. The lake has plenty of natural shade and structure.
Filming is a good idea if damage is occurring. I've seen some people run docking line at an angle from the end of the dock to the shore. If its a couple feet above the water it makes retrieving the bait challenging. Though they would have to remember to move the line in front of the boat when backing off the dock.
