John, I think shooting a bow is the only way to shoot one in. There are things you can do that will help without actual shooting. Exercising on the tiller tree, gradually out to full draw is one. Sweating the bow, leaving it braced for periods of time, starting with an hour and gradually extending that time to as much as 6 hours over a few days. Both of these things help to educate the bow to bend and recover and let you know that the bow can be braced for a while, like while hunting, with minimal loss of energy. I think the only difference is the effects your bow hand has while shooting.