I think that every time, the person should look at the hole; #1 the thickest--- #3 the middle, and #5 the thinnest hit. My teacher does this on every shot. He aims at the portion of the pocket he wishes to hit and as he goes around the table, he'll announce it, saying where he hit the pocket. He wants me to do the same getting the target so precise. If his shape doesn't turn out, it might be because he hit the pocket to thick or to thin. I'll catch hell on AZB because nobody has ever heard of someone doing that, but it makes sense to me and I've seen him doing it time after time. And, he has trained himself to do this for the last 45+ years. A nice habit to learn. I know if anyone raises hell about that, it's because they are jealous as hell. Nothing hard about it, just a matter of practicing it and affecting the brain. Professional golfers don't just look at the green, they have a precise spot to hit the ball to. Even on the driving range, they are aiming at a yardage sign, a tree trunk, etc. Nothing just out there.