Seems to me like Brookeland Bill is on to something. The pro's aim like Bill does. Here's what your pal Allen Hopkins has to say:
Allen Hopkins: "I aim at a spot on the OB with center cue ball.
A lot of it is feel,
when you play as often as I do. you start finding that spot real easily. Occasionally I'll aim the cue stick toward the pocket through the ball to find that spot.
Now you know Allen better than I do and think we've never talked about it, huh? When have you ever talked to him face to face or spent as much time at the table with him as I have? He doesn't know you from the "man in the moon" and could care less to ever meet you.
What you have posted above is CLASSIC CONTACT POINT AIMING. You really can't be THAT CLUELESS as to what CONTACT POINT AIMING IS, COULD YOU?
Here's what a bunch of other pro's have to say:
http://xcuepool.blogspot.com/2010/08/how-pros-aim.html
How many more times do we have to go through the old article from two decades ago? It was proven more players used aiming systems than didn't in a count by Brian and myself.
Oh, I forgot. All these people are lying because they don't want you to know that they actually do something different! LOL Dave knows better because he's actually talked to a lot of pro's and they tell him the real secret.
There are NO SECRETS. It's either CONTACT POINTS, STICK OR FERRULE AIMING TO A CONTACT POINT OR FRACTION, EQUAL AND OPPOSITE OF CB TO OB, OR PARTS OF AN OB WITH DEFLECTION CALCULATED INTO IT WITH PARALLEL ENGLISH OR BHE. AND EDGES AND CENTERS OF THE CB TO PARTS OF THE OB.
It's probably something like, "Sure, sure Dave, whatever you say. Here's a cookie now go away."