Your goal is to zip an arrow through a buck's lungs and possibly his heart, too. But let's not duck reality here. Upon hearing the swish of even the quietest bowstring, many whitetails come unglued, dropping their bodies and whirling away in one spectacular motion. A perfectly aimed arrow might clip a tree limb and veer offline. Squinting through the peep at a behemoth's rack, you might freak and yank your release's trigger. All sorts of things can cause a "gimme" shot to go awry.