I agree with one thing that was said.My friends shoot a single moveable pin on their bows.I tried it on mine and didn't like it for a few reasons.On the 3d course I noticed that if I moved the pin from 20 to 40 or 50 yds I had to anchor in a different place on my face to keep the pin centered in the peep.That's reason enough for me not to shoot that system.I fare well with the round pin guard and fixed pins for hunting and 3d.Anchor point always stays the same and I don't have to worry about ajusting my single pin on farther out shots on deer.I always anchor the pin guard in the center of the peep then look at the pins.