Curling. Surprisingly compelling. Friendly, social sport with lots of ritualized drinking.
What makes someone a better or worse curler? How do they communicate?
The best curler on the team is is down directing strategy and signaling or calling out to his teammates, except when he's 'throwing the stone'. Then the next best curler is down in his place. He uses his 'broom' a lot to point to the spot that they're supposed to be aiming the stone.
What makes a good curler is someone who has accuracy in aiming the stone, including the speed and the direction and amount of the curl. I think experience and frequency of practice has a lot to do with it, though of course some people get really good at it and some don't.