Having the correct length and lie guides you into a comfortable putting stance and posture. Properly fit, your putter consistently sets you up, complements your style of putting and helps you aim. The putter lie must be adjusted to place the putter head flat on the ground. If the putter toe is tilted up or down, the loft of the putter misdirects the putt. The greater the length of the putt, the more critical it is that your putter lie is correctly fit.
You will take more strokes with your putter than any other club in your bag. Consistency comes from practice and a long term relationship with your putter. Length, lie, grip size, grip alignment, weight and balance are personal factors that must be individually fit.
The weight of a putter influences tempo, acceleration, speed and swing path. With too much weight, both tempo and acceleration are difficult to control. Too little weight makes it is hard to achieve consistent strokes. The properly fit putter matches weight and balance to your style for accuracy and distance control.
Adding weight to the butt of the putter will help a golfer with active hands and wrists achieve a stable stroke without affecting the weight of the head. If you are truly looking to improve your putting, Mark Maness, a former PGA tour player, combines basic putting skills evaluation and training with putter fitting.