In regards to Tyler’s feet, the wider base is more preferable due the stability and ability to move from the shooting position. Everyone’s body type and shot will be different but a good solid base helps speed up and stabilize everything. I don’t have an answer for the hands but I think emphasizing getting their follow through down the line with the pointer finger finishing low, due to the pronation, will probably help everything. Have you done PGC’s 2 week online shooting college? It currently is $95 as a coach. In my opinion it is worth every penny. Couple it with this Key 5 class and you should have all the tools to teach it.