This is a great tactic by the way, buried in all the BS. Totally passive yet completely effective. I did this last week when I was caught in a crowd, baited a guy into a wave to clear him out because I saw the next set coming through. Don't underestimate everyone's desire to not miss a wave.
That's my tactic too. I also like to sit shoulder to shoulder with one of my boys. Well both drop in on the same peak and split it. That way were both inside and have priority over the others. No one can back paddle either. When we get an impolite one in the lineup, well paddle in front of his ass and block all the waves. Pretty effective.