After using the Quintic Software last week to test the Plane Face Putting Aid (eg nearly 50% improvement in face angle after just 20 mins practice - see posts for full results) I had the absolute pleasure of speaking to Dr Paul Hurrion. Was so great to bounce ideas and learn from someone who has coached at such an elite level. One of the areas we discussed was the relationship between shaft lean and loft to create a better roll on the ball, with the ideal effective loft (shaft angle and static loft) being around 1.5-2 degrees. So for a 4 degree putter we would need 2 degree of forward lean. A 2 degree putter 0 degree of forward lean.

Due maintaining a consistent plane/lie angle/path the Plane Face Putting Aid will
produce a very symmetrical/mirrored stroke. I would therefore recommend looking at putter loft and matching the shaft lean to try and achieve this 1.5-2 degree effective loft.

This can easily be done with the stickers on the centre of the shaft. The shaft on both stickers will create 0 shaft lean. Place on the bottom sticker and lean the shaft forward to the edge of the top will create 2 degree forward. This can easily be checked with your phone if needed as per the pictures. Using a camera to see the start and impact position is also a very useful way of checking this at impact. Just make sure the person is staying on both rails though before measuring this! We can now add effective loft to the list of face angle, face rotation, lie angle, club path, angle of attack, contact, low point, and speed control that the Plane Face Putting Aid improves!

Any questions please feel free to contact me on planefacegolf@gmail.com