LOL I have that happen all the time. Some cast to the same cover I'm fishing.
Oh man thats insane. Had a guy attempting to anchor up over a rockpile that I was fishing and failing badly. His boat was at least twice the size of mine and I had to push him away with one of those boat poles (for docking etc) with the hook on the end. He disrupted my fishing for at least 10 minutes and never appologized.