Goal: Center the strike and eliminate the heel hit
How to do it
Push two tees into the ground forming a gate barely wider than the clubhead: one outside the toe and one inside the heel. Swing the club through without touching either — rehearsals first, then with a ball. Hitting the inside tee betrays hands pushed outward.
Impact mark toward the heel or the hosel; on video, the hands are farther from the body at impact than they were at address.
Frequently asked questions
What is the "The tee gate" drill for?
Center the strike and eliminate the heel hit
How do you do the "The tee gate" drill?
Push two tees into the ground forming a gate barely wider than the clubhead: one outside the toe and one inside the heel. Swing the club through without touching either — rehearsals first, then with a ball. Hitting the inside tee betrays hands pushed outward.
How long does the "The tee gate" drill take?
About 15 minutes per session, 20 reps.
Sources
Adam Young — The Practice Manual
PGA of America — PGA Teaching Manual: The Art and Science of Golf Instruction