Az-Zj

If they get a gps to the site, they might as well just ask google..."ok google, where is my partner?" Compass and azimuth is the only way they can do it and still keep credibility. Guessing that will be at their sites in 10-12 hours not days or weeks. Following a compass a d direction is the easiest thing...if they had to orient a map and find their own way that would be completely a different story.

I was thinking the exact same thing!!

10 miles over rough terrain compared to just looking at it on a map can add miles to the actual distance. The folks that are doing the hike are in for more than 10 miles. Up and down (terrain) does not equate when people are looking on a flat piece of paper.