John K,
If a player is charged by the stroke, how do you measure, including the gimme putts, uncounted penalty strokes (or more likely stroke and distance) etc.?
I like the idea of positive reinforcement, like Marshalls handing out coupons if they see someone doing something, like playing out of order to speed play. It could be abused, of course.
Maybe you give a coupon out when they return the cart. If under X hours, they get a few bucks off. Your next green fee is determined by how fast you play. Same problem though, as everyone will blame the guy in front of them.
BTW, Yates studies do pretty much prove that 7 minute tee times put no more players on the course than 10 minute times. I recall Kemper Lakes started out with either 10 or 12 minute tee times, and it was no sweat to wait a few minutes on the tee for the starter to let you play away.