Don ALWAYS had today's Racing Form in his back pocket, even when he was playing pool. In fact he might study it while his opponent was shooting. I never saw him practice, just get on the table and rob guys! He wasn't a shortstop, he was a top player, one of the best. Number one in Popcorn's stable of players in El Monte, CA. Don was rated above Mike Massey, Larry Lisciotti and Eddie Burton. No one who knew him wanted any piece of him. He had this light touch where the cue ball only moved just as much as was necessary (kind of like Efren). A few inches here, a few inches there, and then the rack was over. It never looked like he was doing too much with the cue ball. He didn't get way down on the ball either, kind of standing half erect.
The only guy I saw challenge him to play that knew him was Richie (when he was 18!). They played to a draw. Don had Richie broke and Richie borrowed some money and got even. That's when 'Corn pulled Don up. Don was another silent player, never wasted any words. Old school I guess. Just play, win, and go sit down and wait for the next customer.

They put him on Danny Jones in Johnston City one year. Danny was also a top player but Don drove him crazy. Danny kept borrowing money, convinced he could beat him, but he never did as far as I know.
I will double guarantee you that if you talked to a guy like Don about aiming techniques he would just look at you and smile. He didn't need anyone to tell him how to aim!