It’s been almost two months since I posted this question and a lot of great discussion here. Never expected JC to pop his head in so that was awesome.
What I have learned in the last two months of practice is, the JC Sneed method is an excellent putting tool. The first grid division has been the most frustrating and I believe plr has it right in that respect.
As great as this method is, I have settled into using Naturali’s putting method of each grid equaling 24”.
For me, this just makes sense. The hole is roughly 4” and when scaled to the grid, there are exactly 6 holes across a grid (24”). The math is easier since 12” = 1/2 grid (50%); 6” = 1/4 grid (25%); etc.
With Naturali’s method there is a larger aiming range for long putts with large arches. The JC Sneed method gives you roughly a 45 - 60 yard aiming range from the center of cup to the edge of the last visible grid. Naturali’s method shows an aiming range of roughly 60 - 72 yard aiming range.
Both methods give you the exact same aiming point while using different math for the dot speeds. While using the JC Sneed method may give you an aiming point of 15 (edge of first grid), Naturali’s method will give you an aiming point of 24 (edge of first grid).
Both are great tools for accurate putting, it’s a matter of personal preference I suppose.
Thanks for all the input.