I took sloppy's post to mean he focuses on a spot that the stick is to aim at to pocket it, not the contact point. This is how I was taught as a kid. I was taught to recognize the angle and relate it to 1/4,1/2,3/4 ball contacts etc... Slightly more fractions but I won't go into that. From there you know a 3/4 ball contact for example, the tip should point at the outer quarter of the object ball. From there you recognize if it's thinner or thicker than a 3/4 ball contact and shift the point the cue is to aim at very slightly and get down with the eyes locked on this point. Through repetition and hitting balls when practicing various angles you learn to auto adjust as you walk in and get down. It is very much a method to get you in the ball park and let your subconscious take over but it was surprising how quickly I was looking directly at the part of the object ball... Or outside of it that the tip should be pointing at without having to go through all the fractions.
Now, I've hit far too many balls to give aiming a thought. I tend to just visualize the shot now a few times before stepping in.
I've given it a go on some advice I over heard Ronnie O'Sullivan giving a fan. .. Play quickly and don't give your self time to aim. It works for him brilliantly but for me I'm a slow player by nature and find my self making silly mistakes because I've thrown my tempo out the window.