Hello, I'm posting this question here to eliminate the confirmation bias of golfers, as I want a more real scientific answer to counterbalancing. My theory on counterbalancing a golf club is that it is beneficial in reducing the sway on the club head caused by the swing itself. In other words during a golf swing the club head due to its design will causes small vibrations and movements that can alter the impact on the club face. By using a counter weight these vibrations and movements are reduced and therefore allow a more consistent impact on the club face. I am not trying to measure ball flight, distance, or what have you based on a counterbalance. I think this is an incorrect way to measure the effects of a counterbalance (hence why I'm posting this here vs a golf forum). To correctly measure the effects of counterbalancing my thoughts are the measurement of the impact on the club face. Does it help shrink the impact zone allowing for a more consistent strike, or is there no effect, or does it worsen? Also at what weight would the amount of a counter weight be needed? My thoughts on this are the minimum needed would be the total weight of the shaft. My thoughts for reasoning are by using a counter weight equal, or near equal, but not heavier than the overall weight of the shaft, you cancel out the feel of the shaft and therefore would only feel the weight of the club head. To support this I have two examples. Example one: Sergio Garcia is reported to use a 100+ gram shaft and also uses a 100g counter weight. In my mind this explains why he benefits from the counter weight. Example two: Boccieri Golf makes a heavy driver which uses a 57g shaft and also uses a 50g counter weight. In my mind this also explains why there would be a benefit. In summary based on the two examples, there would be no benefit to a counter weight that is 10g lighter than the weight of the shaft, and 10g heavier than the shaft. Therefore; maximum benefit to improve the consistency of the impact on a club face will result from the use of a counter weight equal to that of the shaft's weight. Question 1: Does counter weighting improve the consistency of the impact on the club face? Question 2: Does the counter weight need to be equal to the weight of the shaft for maximum benefit? Thank you for the help. It is greatly appreciated.