When I was younger I worked at the Peir summers. One day one of my cohorts threw a lit cigarette into a boat that was docked alongside the peir in a spot not normally used (he didn't see it or expect it to be there). The resulting fire damage made sure no one ever used that spot again.
Not that this is a solution to your problem, at least not yet. Now if you'll excuse me, my neighbors parked in my spot with his windows down.