The USGA has announced a formula for pace of play that works. In the ten national amateur championships it had a major effect in speeding up play. On average, the threesomes sped up by 30 minutes in their stroke-play events.
Here's how it works: Each group has to hit four checkpoints -- the fourth, ninth, thirteenth, and eighteenth holes -- in a certain allotted time, depending on the course, or stay within 14 minutes of the group in front of them once the flagstick is put back into the hole.
The first breach is a warning and then a Rules official will monitor the players in the group to see if the culprit is one player or if the entire group is the problem. If the problem is the group, then the second infraction is a one-stroke penalty for each player.
How I wished this policy was implemented at most courses, or at least during tournaments.