How about the Buddy System. We preach it in scouting but it makes sense all the time. Many lost person fatalities occur when they are alone. Remember the poor youth bicyclist in Utah who rode ahead and got lost?

The article mentions he left the main group to return to the pickup becasue he was dehydrated. Sounds like he already had one strike against him yet did any of his "friends" offer help? A sad and uneccessary lose as is too often the case.