Comments about loading and unloading are right on. Even when learning to unload, a young hitter may get his hands too far away from his body. Hands inside the ball at contact are indeed important, but check his hand position when he begins unloading. They should be near his shoulders and at max 3-5 inches away from his body. They should stay close to the body all thru the swing and then inside the baseball. Good luck and be patient.