Aside from that, shot looks good.
I notice most collegiate-coached bowlers, like much of the female's we've seen on the USBC challenge, have the top of their foot rest on the approach, not the tip, or the bottom. I don't know what's involved with that, but it would seem like you would have no choice but to keep it down in that position.
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Elite P43 - 16#
Lane #1 Cobalt Bomb - 15#
Track Machine 15#