About a month ago, I was out on a chest-head high day, and this dude was repeatedly dropping in on me, not just snowballing, but full on drop in and surf in front of me. This went on for about five waves before I confronted him. This dude was my brother!!! I told him I didn't mind a party wave once in a while, but said how I was having a great time while he was about 20 yards south of me, and that just because I was his brother did not give him the right to drop in on every f#$%ing wave I went for. He stopped. I was kinda pissed that I actually had to say something. I've shouted/whistled off the occasional shoulder hopper if I think he didn't see me back in the pocket (or was planning to play that card), and have on the rare occasion (when it is about to hit/decapitate me otherwise) grabbed the nose of a shoulder hopper's board and pushed him back off the wave.