I believe a good pre-run drivers meeting is the key to avoiding 99% of problems on the trail. Going over a few key rules there, drinking, for example will save you later. I let them know its not allowed, and if I see it there will be no warning, your off the trail. That one and recovery procedures seem to be the most important to me.
Personally I have not had to revisit any rules out on the trail.
Speski OffRoad LTD, Cargo Solutions for Toyota 4x4's http://www.SpeskiOffRoad.com
"80 series, with a fridge"
1976 FJ40, Project with little progress.
2004 Starcraft 10RT