Before reaching your ball, take note of distance and think about
club selection.
Take 2 or 3 clubs to your ball.
Limit your number of practice swings - don't learn a new
swing on the course.
Be at your ball ready to play when it is your turn.
Study the line of your putt while others are preparing to putt out.
When finished putting, record scores at the next tee, not at the
green.
Pay attention to the location of your cart - don't leave it
behind.
Be ready when it is your turn.
When competing in Match Play, or Better Ball competitions, once
a hole has been decided, the other player(s) should pick up
their ball(s) and go to the next tee.
Note: 2 minutes saved per hole will save 36 minutes per round!
I'm giving you an un-speeding ticket for playing a round of golf in excess of 4 1/2 hours.