Set up to the ball. Then drop your trail foot back until the toe of your trail foot is even with the heel of your lead foot. As you swing back now your trail hip will be out of the way. This creates the space you need to swing your arms into. On your down swing leave your trail foot or heel on the ground. Your force or weight moves up to your lead foot but your trail heel is still on the ground. This will help you accelerate your arms faster than your center.