During a round of golf the putter is used more than any club in your bag. On average 43 % of a player's shots are struck with the putter. Yet most players buy their putter "off the shelf" based on reviews, or because that is what the pros are putting with. I agree a putter must fit the eye of the person using it. If a player isn't comfortable with the look of a putter behind the ball they will not have confidence in it. However if the putter's length, loft, lie and weight balance are not matched up to a golfer's style of putting there is a little chance the putter will lower their score.
Length - Golfers are so different in height, arm length and putting posture that the putter length
should be custom fit to ensure a smooth putter stroke. Arms cramped into the body or stretched out while stroking the putt are not helpful to putting consistency.
Loft - Putters generally have between 2 to 4 degrees of loft. The loft of a putter should be matched to a golfer's hand position at impact to ensure the ball rolls smoothly. If a player uses a forward press to start their stroke or positions the ball back of center in their stance they may need more loft. If a player is a wristy putter or positions the ball ahead of the center of their stance they may need less loft.
Lie - Since putters do have loft if the toe or heel of the putter is off the ground at impact, the face will be pointing either left or right of the target line. The lie angle should be adjusted for each player so the putter sits perfectly in the center of the sole from heel to toe.
Putterhead Styles - There are many different styles of putters and knowing the correct type for your stroke can improve your putting. If you swing the putter on a slight arc, a putter with a "toe hang" balance is built for you. If your stroke is more straight-back and straight-through, you will benefit from a face balanced putter. If you struggle to hit putts solidly, a high MOI putter will help. These are the large, mallet-styled putters. The sweet spot is much bigger and distance control will be easier for you.
At Golf Rx we specialize in putter fitting. Our fitting process ensures your new putter is custom fit to your stature, putting posture and putting style. Get a properly fit putter and you will definitely see dramatic improvements in your putting this year.