It's sort of like building a house right beside the interstate and then yelling at the cars as they pass by. A boat dock is visible cover, and people are going to fish visible cover. If you add even more cover around it, that's just gonna concentrate more fishermen around your dock. Attracting fish to a particular spot on public water and then getting angry because people fish for them is just irrational. Build a private lake if you want privacy; can't get it on public water.