What will improve the putter's performance for most less-skilled players?

A well-fit putter significantly enhances a less-skilled player's performance by ensuring that the specifications—such as length, weight, and lie angle—are tailored to their individual body mechanics and putting style. Proper fitting can help promote consistency in stance, posture, and stroke mechanics, which are essential for effective putting. When the putter is suited to the player's physical characteristics and preferences, it can lead to improved distance control and accuracy, making it easier to develop a more reliable putting stroke.

While the other options have their merits, they may not address the fundamental need for a properly fitted club. For instance, a heavier putter might help with stability, but it could also hinder the ability to develop a smooth stroke if the player is not accustomed to the added weight. Longer shaft putters may provide a different perspective and address height issues, but they can also lead to a lack of control if not correctly fitted. Larger grips can influence feel and grip pressure, but if the putter itself is not the right fit, the overall performance may still be compromised. Therefore, the emphasis on fitting stands out as the most effective way to improve putting performance for less-skilled players.