Form the arms-shoulders triangle at address and make strokes feeling that the chest is the engine. The elbows keep their address flex from start to finish. Record from the front and check that the triangle never changes shape.
On video, the lead wrist breaks down after impact and the arms-shoulders triangle changes shape during the stroke.
Frequently asked questions
What is the "The intact triangle" drill for?
Rock shoulders and arms as one piece
How do you do the "The intact triangle" drill?
Form the arms-shoulders triangle at address and make strokes feeling that the chest is the engine. The elbows keep their address flex from start to finish. Record from the front and check that the triangle never changes shape.
How long does the "The intact triangle" drill take?
About 10 minutes per session, 20 reps.
Sources
Dave Stockton (con Matthew Rudy) — Unconscious Putting