I use the range find when I' m hunting in a new area. I don' t use it all the time, just to get a rough idea of my shooting lanes. Never even thought of trying to use on a deer while in the stand. I use it more for groundhog hunting, on the golf course and at home for my own personal pactice aid. Put a judo point on wack a stump or clump of leaves and check the yardage.