Your putter is used more than any other club during a round of golf. Hence, it is critical that you grip it in a way that best fits your game. I have experienced with all kinds of grips over the years, but always revert back to a standard grip. The only reason I tried different grips was to see if I would feel more confident or see any improvement to my results. I never did, so back to the basics is worked for me. There are many different variations to holding your putter, but three basic ones is the best place to start if you are planning on making changes or just starting to develop your putting game.