My bot started shooting fingers, but after two days of doing so, his fingers gave out. I gave him a Scott release from my shooting box after I adjusted it to fit his wrist and he really took to that. He gets a more consistant anchor point and can hold the string long enough to allow me to help him with his form. I know everyone shoots differently and with different set-ups...this just happens to work for me/my son.
Again, thanks to everyone that contributed!