I have the same set-up as TacoHunter above accept I keep my top pin at 50 yards. Second one ends up at 61. I don't move them and aim low. I know if I aim 12" low for anything between 8-43 yards, it'll be a dead animal. Very simple with a little practice. I shot an elk at 20 yards and a deer at 63 last season. Never touched the slider once. Only used the rangefinder once on the deer.