I spent the first 4-5 months of this season experimenting with arm/mid lock putters. I tried around a dozen different putters with various specs and using different techniques. I finally settled on a Cleveland Huntington Beach #8 that I extended to 41", bent slightly upright, increased the loft, and added tungsten weight down the shaft. The technique that works best for me is with the ball in the middle of my stance which creates a lot of forward press, and using the claw grip with my right hand...similar to Will Zalatoris. This made an immediate improvement to my putting both direction and distance control. I now walk up to putts expecting to make every one.