I don't use one in the sense the question meant. I take my range finder with me when I scout areas to get an idea of shots from point to point, so I know a given distance from any shooting spot I intend to use. I don't stalk though, and if I did stalk I would use one for sure. Having 2-3 spots scouted and knowing ranges from my intended shooting position to stationary points (specific trees, bigass rocks...) in each spot is plenty comfortable for me.