My go to putter is an old Golfsmith Brassmaster 05, which is essentially a Bullseye putter. I regripped it with a jumbo pistol grip turned 90 degrees so the back of my front hand is parallel to the clubface. What this lightweight setup gives me that the high MOI setups do not is a sense of touch. I average almost a full stroke per hole difference between this setup and higher MOI setups.
