Have tried the Super Fast speed at 20 stimp, I made myself a CC tournament using it & tomorrow the second round comes with the Ultra Fast speed, that I suppose will be 30 stimp.
As Championship is stimp 13, you can figure out the difference with the other two mentioned speeds.
Made the tournament using the front of Best par 4, Merion Hole 6 and Cabo hole 18 are very tough because they are very steep.
Me loving "hardcore" stuff..yes, but perhaps many players will find the 20 & 30 stimp way to much putting on very steep greens, surely at Merion, Olympic, Oakmond, Cabo, Whistler & now Bandon.
I guess by trying the different speeds it does not take to long to learn & find the new parameters either in the approach & short game, but mainly with the putter. Yup difficult but not impossible to play them.
I guess the main curve to learn is the down hill putts at any distance.
Good luck : )
Eric