Looking at the CB last is such a bad habit to get into that I just had to post one more time, emphasizing that it will be nearly impossible to control position and make shots with any degree of difficulty beyond basic.
Of course there are exceptions to all rules. Jump shots may be one, jacked up off the rail may be another, but I'm not talking about the exceptions, I'm talking about the correct way to address a shot.
Now there are lots of things in life people do differently than others. I think any pro who says he looks at the CB last, simply doesn't realize he or she isn't doing that because their action is so automatic.
When I owned a poolroom one of the most common things I saw were people who couldn't even make contact with the CB. The stick would slide off the side, miscueing, and never even get the CB rolling.
Rather than work on alignment they started focusing on the CB only. Realizing success with now being able to strike the CB, this was seen to them as a step in the right direction.
No student of the game who can run racks of 14.1 (the game I equate pool to) would ever be able to do this by looking at the CB last.
Here .... don't take my word for it.
LOOK HERE.
Here is a man we can all agree on that is not only a great ambassador to the game, but a great player and 100 ball plus runner. Articulate and worthy of heeding if you indeed want to improve your game.