A fellow Chunker. I am usually up there once a week. I also have a boat tied up ther at the B boat launch. I have seen what you are talking about. Last weekend I had the boys up there and a big bass boat launched out and cut into our drift.
I have become use to it and tend to find different areas then the main channel in the middle of the lake. I have found that if you fish about in the middle of the A and B boat launch you have less traffic. The bigger boats do not want to go that far with just using there trolling motors.
Good luck to you.