unless the deer is walking towards or away from you. then you have to keep figiting with your sight or "guess" by holding over or under. imo adjustable sights have no place in hunting...they require more movement and more moving parts that can go wrong. if you want to spend twice as much on one and chance your hunt, go right ahead, i'll stick to my dependable, tried and true fixed pins. i know once i draw, there is no need to let my string down to adjust my sight on a walking deer or "guessing" by holding over or under. good luck with your purchase.