I have an older IQ 4 pin sight on a bow new to me that iv been sighting in. I got the first pin set down at Reedys for 15/20 yards dead nuts now its on to 30,40,50 alll with the knowing that 35 is really my comfort zone maybe forty in a perfect situation. Then last night i was down at the new Cabelas to check things out ... and i started looking at single pin sights the HHA's to be specific. With the dial on the side allowing for elevation it seems like a very simple set up you just install ... determine yards to target , adjust and let her fly ? Anyone find them selves constantly having to adjust the elevation with a target that is on the move ... and by on the move i mean slowly walking .. comes in at 40 .. your ready to take the shot and the deer moves to 30 .. you have to stop adjust ? I really like the simplicity of the single pin but ive never seen one in action and none of the guys i run with use them ...