Trackoholic,
It also depends on the ball, its core and where and how you want to use it.
Also it depends on what the 'up' portion of your PAP measurement is and how high the ring finger is above the midline. (For the Rico drill, even high trackers can, have the potential to use that drill BUT pin position must be the same distance above the center of the grip that is equal to the 'up' protion of your PAP.)
Recently, for some reason, I couldn't make up my mind on a few balls whether to put the pin above or below the ring finger; so, of course, where did I put it? Yup, in it.
It worked for some, almost worked for others, and didn't work for a couple. Sometimes you have to just experiment. Pin in the ring is as valid as any other position depending on the ball's basic reaction and pin position you need/want. I learned and was told that the only caution is to place the pin either directly in the ring finger hole OR place it 3/4 - 1" away to avoid possible complications.
Have fun & good luck.
--------------------
"None are so blind as those who will not see."