I range particular trees or other objectsat first light around the perimeter like others do (unless I already know the distances from a proir day), but I putthe rangefinderin the front pocket of my BugTamer suit. From time to time during the day, I measure again to reinforce the knowledge. I do this for a couple of reasons: 1) it keeps my head in the game when I start to feel my mind wandering, 2) I range a fair number of landmarks in all directions around my stand, and I don't want to be confused or have to think too much about distances when I draw.