Definitely the biggest reason that people miss putts is that they just do not aim the putterface correctly in the first place. There are a lot of illusions in aiming the putterface, and in all golf clubs for that matter, but the putterface especially shows up these small tiny errors. Imagine trying to play a game like snooker, pool, darts, firing a gun from a side-on stance, we would not even get close to hitting the target. Our best perspective on being able to aim is from directly behind the line but the rules of golf do not allow us to do that. What the rules of golf do allow us to do is to draw a perfect line on the golf ball. With this little device here which is exactly the diameter of the golf ball and the width is half the diameter of the golf ball I am able to draw a line all the way around the golf ball. This gives me something that I can now aim directly at the target and then square my putter face up to, particularly if you have a line on the back of your putter which makes it even easier. We can now roll the ball into the hole with confidence because we know we are aiming the right way. Look for this product on the instructor aisle in GolfSpan.com and you will be aiming correctly on the golf course.