RE: How many use a single pin sight...
I use a Tru-Glo Glo-Brite single pin sight. I have marks for 20, 30, 40, and 50 yards for the practice range and 3D, but I typically keep it on 20 when hunting. I can keep the sight on the 20 yard mark and hold high at 30 and be right on, so i don't need to mess with the sights during crunch time. I like it much better than a multi pin sight.