I have to agree with your view on this subject.My dd has tried a 14" ball and it didn't seem to make a improvment and affected her mech. not worth it for her,maybe others have better luck,but not for my dd.I think that they are counter productive. What happens is that the ball is too big for their hands and therefore by necessity the pitcher must alter the way they hold and throw the ball, defeating the whole purpose of engaging this thing in the first place.