The toughest thing to do when monitoring pace of play is to get early groups to move when they aren't being pushed.
You might say what does it matter?, but it matters greatly, particularly once a certain # of groups are on the course, you need leading groups to be where they should be in order to have room to move groups forward where they belong.
I will always go to the front of the pack( or near the front if the first group is flying) and let them know I'm about to move players up so they better get on pace.(and shuttle them forward if behind)
Then with the help of a ranger we will shuttle a group for a shot or two (not optional), particularly if a climb is involved. This of course works better at a walking course as a couple of brisk rides, especially uphill, do help them catch up.
I then inform them to maintain their position, go backwards through the field, and fill the new gaps we have created.
I often use the expression "pull from the front".
Too many rangers, especially at junior events attempt to "push from the back", and worse yet try to do so once the course is alrady full, at which point it's totally futile.
After 12 years of doing this, when I approach a group to simply say hello, they either break into a jog, or try to get in my cart
I found the Pebble comments about "lengthening" the time it takes to play a hole (#6) interesting.
We do a lot of junior shotguns with large, full fields there is often LESS waiting, if you LENGTHEN the course,(as opposed to all forward tees) because the kids can actually tee off, rather than waiting all day for kids to get out of range.
At the end of the day, it isn't how long you're on the course, as much as the waiting.
Playing and walking are way more fun than waiting.
Difficult concept for many to understand