Take a Look: Large-aperture peep sights might give up some long-range precision, but they allow for maximum visibility in low light. That's what a whitetail hunter wants. As you're positioning your peep before the season, draw your bow and close your eyes. When you open, you should be staring right through it, at your pins. If you have to move your head at all to see it, keep tweaking its placement—and don't serve it in until it's perfect. This way, you can skyline the peep aperture, hit your secondary anchor point (see below), and take the shot, confident you're lined up, even if the peep itself is tough to see.