LynnBlakeGolf Forums - View Single Post - impact bag and left thumb placement? Thread: impact bag and left thumb placement? View Single Post #2 12-29-2005, 12:15 AM phillygolf Senior Member Join Date: Feb 2005 Posts: 355 Originally Posted by 12 piece bucket Your figuring it out. The Golfing Machine prescribes a Left Thumb that is on the aft side of the shaft, not on top and not underneath. Take your club press it into a door frame. See what left thumb placement allows you to get the most bend in the shaft. The aft placement is recommended to get the most support through impact. Great post 12!!!! phillygolf View Public Profile Send a private message to phillygolf Find all posts by phillygolf