A question for you, were they "brutally slow" or was it just your were a single? There is no way a foursome can be fast enough to stay ahead of a single, it's just not realistic. I too can finish 18 (walking by myself) in 2:20 - 3:00 (depending keeping the ball in play), so I think you'd be shocked at what you are considering brutally slow play of a foursome is actually "on pace". I have been in this boat before and it is real difficult to keep the focus. I will wait on the tee (as long as I can - without whom ever behind me from catching me). While on the tee, I will chip and stretch out, check the scores on my blackberry, etc. It passes the time. Once I reach the green (after putting out), I will hit some chips/putts to kill a little time. That's really all you can do. If it is still bad, I call it a round and start playing two three balls each hole and not post it as a HC score. Good luck!!!