As you will see from this article, Putter Aim is requires precision. It is quite remarkable that you can bisect a golf tee with your aim at 10 feet and split the center of the hole. All it takes at 10 feet is 1/2 the width of the tee to put you outside the hole. Click on this link and check out the visual of this phenomena. WOW, no wonder putter aim is so important.