One of Dave Pelz’s practice guidelines is “Never work on stroke mechanics outdoors on a putting green without a feedback device” His use of the yard stick is described in post [Two putt targeting principle]. The yard stick is especially handy, in that it can be (1) used as a pointer to the aim point on the target line, (2) used as stroke guide for pure inline stroking (eliminates out to in or in to out stroking), (3) used an indication of the back stroke magnitude, and (4) easily repositioned for changing the aim point.
To aid in this positioning, drill a small hole at the center (or end) of the yard stick and insert a tee into the green close to where you want the ball. Moving the end of the yard stick then pivots the yard stick around this point for changing the aim line (see attached Figure 1 for picking aim point on target line). Place the ball at a distance from the yard stick to allow the club head to be close to the yard stick and centered behind the ball. You’re now ready to get aligned with the yard stick, and hit the ball (Figure 2).
To aid in this positioning, drill a small hole at the center (or end) of the yard stick and insert a tee into the green close to where you want the ball. Moving the end of the yard stick then pivots the yard stick around this point for changing the aim line (see attached Figure 1 for picking aim point on target line). Place the ball at a distance from the yard stick to allow the club head to be close to the yard stick and centered behind the ball. You’re now ready to get aligned with the yard stick, and hit the ball (Figure 2).