I was thinking about getting the kind of sights that have the knob that you slide up and down to adjust your yardage. I was wanting to get the "Sniper" out of the cabelas archery magazine. But i think that it would be to much movement to be playing with sights when a deer comes in, my question is... how do they work for hunting? do deer spook when you try to adjust it? and has anyone had any experience with this particular sight (the sniper) before? Thanks in advance