On approach shots if I am inside 100 yards, I aim at the pin directly assuming it is not tucked on a ledge. I try and judge spin (back amount),etc...If it is outside of 100 yards, I do what was taught to me last year by a famous coach. Aim at the middle of the green and take your 2 putt for par. Almost all amateurs believe they hit the ball farther than they do, so in most cases it would be wise for all of us to take an extra club.