Just so I have a bit better understanding.
Pin placement after drilling dual angle layout.
If you drill the same dual angle layout on
2 ball with say a 2" pin & 1 with a 4" pin.
I would asume depending on layout used
that 1 ball would be pin under & 1 be pin over
What differences in ball reaction would there be?
MOTIVated Down Under.
Pin up layouts would give you more length and in most cases a stronger backends reaction! Pin under makes the ball usually read sooner resulting in a much smoother ball motion and sometime a "arching" angle!