it sounds weird but sometimes i had the feeling, that training driving for Forwards trains even small guys pretty fast in IS - but i don't have recorded training data to really proove it.
Driving for Forwards trains IS faster than JS for forwards does.
JS for guards trains everyone regardless of height faster at JS than JS for forwards.
100% Sure on both those statements.
my statement was, the high modifier for Inside Shot training is smaller in one vs one for forward then the normal IS training. So when you have a big and a small guy, and you train till the big guy have 3 IS both of this kinds of training, the small guy shoots better inside when you do 1 vs 1 training(but that is just a hunch)