What do you do when one of your regular foursome won't shut up? Talks during everyones swing, talks while we're putting. Has to comment on every bad shot he makes and gives detailed description for the reason it happened. Gives constant advise on the course to help improve our game. The three of us are under 10, he is about a 25. We've asked him not to do these things but he seems not to be able to control himself. Other than shooting him, what can we do?