What can go wrong with a stick for throwing balls? Well the answer is.....this product. The area for holding the ball is badly designed and grips the ball too tightly. This means that it does not release the ball at the optimum swing height only releasing the ball at the end of the swing resulting in the ball being launched directly into the ground. If you resolve this by reshaping the gripping end (with a sharp knife) then you find that stick itself is not strong enough to launch the ball with any distance.
Have thrown mine away and purchased a different one that does what it is supposed to.