8802: The only real challenge is putting.
Agreed. I use my own unique formula of Vertex angles, flow %, quadrants, and other declining/inclining variables and other multiplicative measures to "approximate the correct line".
At one point I purchased several large size Canvas sheets (from an art shop) and would annotate every single putt, location, break, and flow % by placing a numeral and then *footnote* it at the bottom of the page. Come to think of it, I should probably start doing this again - my 1 putt % has dropped by 3% since I stopped.
Some people say play by feel. I save "feel" for real life sports and Rhythm based games such as SC2, Battlefield and CoD series. Making me want to throw on some old Black Ops 1 and run the board with Chopper/Dogs and 10 KDR lol.