Shooting from your knees is a bread-and-butter shot stance for western bowhunters. But whitetail hunters are wise to practice it as well. Outside of standing flat-footed, this is about as steady a shooting stance as you can get. Using your knees, you can square up to the target and maintain near-perfect form.
But it’s useful from a tactical hunting standpoint as well. It’s low-profile and comfortable, so once you’re there, you can stay there for some time. Whether you’re still-hunting or shooting from a ground blind, the kneeling shot is definitely one to practice.