ApexPC:It works good enough for me that if I ding the shot and have the right distance I can be within 3 feet of the hole quite consistently.
Impressive statement! We should be seeing Bollox-like scores then!
ApexPC:I had been using those numbers for several months, at least 100 ranked rounds, before I wrote the tip.
That a surprisingly vague range for someone who knows they've had exactly 6 disconnects in just over 2 years. If you gave us a date then we could check your score history and see the improvement.
ApexPC:How much on course experimentation did you do using the tip as written?
None. Your scores and stats didn't warrant it and one mental calculation was enough to know it was quite a bit off compared to what works for me and compared to Kat's calculator.
You should try DaddysKat calculator. I have spent some on course experimentation time with that.
Consider re-writing your tip to correct for the grid size error.