Full swing · Changes the swing

Headcover outside the ball

Setup in 3D
3D view
Setup from above
From above

Place a headcover just outside the ball, about a centimetre from the toe at address. Make half swings with a wedge without hitting the headcover.

Trains
Shank, Heel, Swing path
Dose (suggestion)
20 balls
Count
Swings that miss the headcover, out of N
Stop signal
Stop: pain 3 out of 10 or more, pain spreading into an arm or leg, numbness, or more pain the next morning.
Source
Golf Monthly: Golf shank drills