Came across this the other day. Tried it at home and eager to try it on the course next. It’s odd at first, but takes all my anxiety out of my stroke. While looking at the ball im distracted with the takeaway in my peripheral vision causing me to make micro adjustments during the stroke to compensate for my unintentional perception of the takeaway (maybe a bit inside, maybe a bit outside, maybe too quick or short or etc). It’s like a little demon in my brain when I’m 2,3,4 feet from the hole only. Concentrating on the butt of the club (specifically the tiny hole) completely shuts up the little demon and frees up the stroke on the shorties. Just for context, I’m a 2 handicap and the only thing keeping me from being a +2 is averaging 34 putts per round 😕
I used this today and it was great! Way smoother stroke. I will say it’s terrifying to stare at the grip rather than the ball. I’m afraid I might miss the ball. So far so good