wow hes very tall for his age, i bet u should be a big guy as well...
anyway, back to bowling
i like his release, he's very smooth except on his last step. I think crochin that much might not be necessary cuz he would suffer pain later on when since he's still growing, but theres no pain or anything, it shouldnt matter. The part i think that should be corrected is the head level going up before the swing. By that i mean, it might create inconsistency if the head moves up and then swing. You can tell him to watch WRW, his head moves up with his swing, but its almost at the same time of the release and not before.
if he is inconsistent hitting the mark he wants, u should maybe ask him to try little bit more push away towards the mark, this might be useful since his arm swing is pretty straight.
other than that, he is very good and have lots of potential
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When a house bowler misses the mark, misses the break point and strike, for many ppl its called a wallshot. When a pro does that its call adjustment
When a house bowler gets his finger stuck in the ball and fall on the lanes, for many ppl its called lame bowler. When a pro does that its called the Machuga flop! ha i like this one
This guy on youtube posts videos of the PBA
for ppl who dont watch TV or want to save the matches this will be great!
link! click me