That's a great drill Michael. I've used a chalk line, alignment rods for the same purpose and it's amazing how quickly ball first contact occurs, with the miss becoming a thin shot instead of a fat shot. Thanks for posting this.
Which spins more??
I have a new 2018 35” Select Fastback… really lovely putter. I like the single sight line on it having used a 2016 35” Select Newport Mallet 1 with the cross lines for the past two years. It is also on a backup 34” GoLo 5S on which I have a SuperStroke…