What factor most influences putter loft fitting?

The most influential factor in putter loft fitting is dynamic loft angle. This refers to the actual loft of the putter at impact, which can vary based on the player's stroke mechanics, grip, and setup. Understanding dynamic loft is crucial because it directly affects how the ball is struck, influencing launch conditions, roll, and overall control on the green.

When fitting a putter, the goal is to ensure that the dynamic loft suits the player's stroke to optimize performance. For example, a player with a more upward stroke might require different loft characteristics compared to one who delivers the putter with a level or downward path.

Other factors such as club length, putter head shape, and shaft material can have an impact on putting performance and comfort, but they are secondary to the significance of dynamic loft, which ultimately determines how well the putter will perform in real-world conditions. Being properly fitted for dynamic loft ensures that the player can consistently achieve the desired ball roll and trajectory, making it the primary consideration in putter fitting.