On my course the rangers don't force a play through, but what they will do is make the slow group skip a hole to catch up if they don't show any inclination to do anything on their own. That happened several times this last summer while I was working.
One small issue that I have with our pace of play policy is that it is fixed to a maximum time rather than to actually keeping with the group ahead. I've had a group make the turn more than 15 minutes out of position with those ahead, but I can't say anything if they are within the 2:10 max time set for 9 holes. I feel that there should be a reasonable expectation for a foursome following another foursome, that regardless of the time, if they are more than a hole behind, then they are still
behind. Unfortunately, those who set the rules haven't yet seen fit to adopt that sort of policy...
