A string line is a great tool to train the eyes and visuals of how much break a putt can truly have. Eye dominance also affects this on different breaking putts.
Becoming a better putter can be an arduous task. Almost all PGA players work with training aids to assist their stroke and the feelings and visuals associated with starting the ball on line better with a solid strike and speed. If its good enough for them its good enough for everyone.
If you do not strike the ball with a square putter face then it will be difficult to make putts. Mishits produce poor start lines, poor speeds and spin other than topspin to make the ball roll truly.
Being aware of your putting stroke is something I do with Brendon Todd on a frequent basis. Watch this video to learn about a drill we use that gives his senses instant feedback.
Our instincts are really strong IF we allow them to shine through. I guarantee most of you will have done something similar to what I show in this video and then gone out onto the course and tried too hard and failed with the putter.
One of my Aussie mates Aaron Baddeley has long been regarded as one of the premier putters on the PGA Tour. Here is a tip he shared with me several years ago when we played together. It may help you sink more putts!!