Excellent follow-on question!
The mind is irrelevant to the stroke so long as the golfer is going about fulfilling the destiny of the putt by complying with the read and therefore the requirements of the world. That means so long as the golfer is intending to start the ball on the same line the putter face aims along and to do this with the usual tempo and rhythm that generates the required pace for the read, the real question is WHETHER the golfer actually does that. The mind doesn't help unless it is keeping the golfer on task. But NOTHING matters if the golfer DOES start the ball on line with the right pace. So if the mind is whistling Dixie or working math problems during the stroke, BUT the golfer still starts the ball on line with the right pace, the mind didn't hurt. If the golfer stands on one leg and putts with the toe end of the putter BUT still starts the ball on line with the right pace, the HOW doesn't matter. If the mind is OFF or ON, BUT the golfer still starts the ball on line with the right pace, the content or lack of content of the mind is totally irrelevant.
The golfer has "intentionality" to hit the ball where the putter face aims and to do so with the usual tempo-rhythm and pace. This is not really mind content or contribution of psychology, but is standard operating procedure for any animal intending to do some movement, as when a cat pounces on a mouse or an owl swoops down and catches a chipmunk in its talons.
There really is NO POSITIVE ROLE for the mind that I would recommend apart from possible awareness of the intention, which is sort of a passivce role, not an active contribution to the success of the putt. Hitting the ball exactly on line doesn't need the mind. Making the stoke with the usual tempo-rhythm doesn't need the mind. In fact, the mind is a bit unsuited for either of these tasks.
What I recommend is humming or whistling or making a metronome "sputt!" noise with your mouth at the start of the backstroke and again at the moment of impact in the tempo-rhythm timing pattern or during the thru-stroke say the word "boooom" in slow motion during impact or say the phrase "I'm happy" during impact or make the mind experience a happy emotion or look at one blade of grass diuring the stroke and think about how that blade of grass is shaped and colored.
The main function of the above is to place in conscious mind something that is the same as the nonconscious intentionality in some basic sense. All of the above forestall the mind taking an active role in the stroke, since the high probability is that the mind's contribution will direct the action into something OTHER than simply start the ball on the line the putter face has been aimed along, with the usual tempo-rhythm. But they do so while alos supporting the intentionality and the idea that WHETHER the ball starts on line with good pace is ALL THAT MATTERS.
Yes, it's true the mind COULD be harnessed in service of the NONconscious body at work getting the size of the backstroke perfectly adjusted for the required force of the putt, but really and truly the mind doesn't know how that is supposed to work and in fact is slave to habits of faster tempo and fear reactions to unfamiliar backstrokes, so the mind if invited to the party is likely to cause a rude scene and spoil the party. Likewise with respect to hitting the ball on line, what could the mind possibly contribute to that, it's so clear and simple?
The best plan is to have YOUR MIND finally accept and agree that all is best when YOUR MIND stays out of it and leaves the engaged and finely honed processes of the nonconscious body tuned to the space by the safe-arrival of ball at and shortly past hole distance intentionality, and the on-task nonconscious movement processes that will best and most ofen start the ball on line if left unmolested by checklists and rules and mid-stroke concerns and secondary plans. Eventually, you will STOP thinking or acting as if the mind has anything to contribute other than bad changes to the simple plan.
There is a basic idea that if your mind needs a gimmick to stay out of the putt, then you haven't really accepted the truth that the mind doesn't handled the pace or starting the ball on line.
Now, back to what to DO to stay on task with the nonconscious body starting the ball on line with the right pace -- that is mostly musicality in the swinging of the putter while also starting the ball on line. Anything that alters the back-and-thru swinging of the putter into some sort of non-rhythmical starting and stopping is bad, so stay musical. Putting is dancing, not test-taking.
Putting Coach and Theorist