Yep. Great posts before this one.
I assume you're stopping at the tee, waiting behind a group or two.
Here are some things I do--I'm about a 10 handicap and don't compete in tournaments, just against friends--to deal with stop and go where I play, where today/tonight it took me two hours to play six holes:
1. take out a wedge and a ball and bounce it as many times as I can
2. talk story
3. make practice swings with various clubs, imagining those swings with a particular shot I'll face later in the round, even a drive
4. make a phone call (I apologize in advance to those against cells on the course, but hey, a round is over five hours and plenty can happen in that kind of time)
5. read a book (this doesn't work well because I'm not actually waiting that long, but this post has me thinking I should use a golf magazine, read an article while I wait if there's enough time)
Hope this helps
And "Go Steelers!"