Importance of Putter Face Balance for Consistent Stroke

The speaker experimented with modifying a putter by adding a steel shaft extension to lock the putter outside the shirt for a consistent stroke. However, due to greasy hands and a slippery shirt, the putter face kept rotating, leading to the realization that a face balance putter is crucial for keeping the face square during putting. This insight prompted the speaker to explore other putters with different features, emphasizing the significance of face balance in maintaining consistent putting strokes.