how does it work and when should you consider using it?
It works by keeping your grip hand (back hand) still and moving your bridge hand (front hand) sideways to create a smaller aim correction than backhand English (which is moving only your grip hand sideways to create a larger aim correction).
You should consider using it with a low-squirt shaft (when your shaft's pivot point is longer than your bridge length) - or when the shot creates enough swerve to make the needed aim correction smaller.
You can also use a little of both for intermediate shots.
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