In most states its illegal to use deadly force to protect property. Some people have too much ego. I hope this marina learns a lesson from this type of BS. Could of just thrown a few pebbles and I'm sure MOST of us fishermen would get the message.
However, I'm curious to know. Are there people out there that continuously pursue fishing areas of water where they've been told off before?
landowner - "hey sir, you're in private land now and no fishing is allowed. i'll appreciate if you go back the other way."
fisherman - "ok, sorry about that"
*next day fisherman returns*