A full bunker shot travels about one third the distance of a regular shot, so when you have to clear 30 yards of sand play your normal sand shot but with a longer club
Improve your impact by keeping your hands and body moving at the same speed, many times the body slows down for the arms and creates a hands swing where you are better off having the torso rotate and bring the arms along
Correct shifting and rotating of the weight are fundamental to good balance