[BerntR]

Where you put your eyes is one thing. How you align your head can have a profound influence on the outcome.

For instance: You can take a practice stroke while you look at the target - and everything works all right. Or you can take a perfect practice stroke while you look towards the back swing. Then, if you tilt your head - up or down, right or left - it can ruin your stroke. The head location and orientation has a huge impact on how you move the pivot.