I've wondered the same myself. A little different scenario but 2 years ago my buddy and I hunted a new-to-us area. Other firends have hunted this area in the past and gave us all their GPS points, maps, etc and basically told us exactly where to go. It was weird to be in an "unknown area" on opening morning with no scouting. We did end up getting in to many elk and a couple excellent bulls but I can't imagine that same trip without the advanced knowledge from friend familiar with the area.