The Pro Power Drive Softball Pitching Mound! There’s no just leaning forward and making it work. With the Pro PDS SPM Spring System, you have to weight shift and compress into the drive position to get it to teeter and you have to maintain that compression to keep it teetered forward until you Fully Launch. This is what Builds that True Muscle Memory to Drive with the back foot and leg. With its Foot Guides, you can’t prematurely rotate on the back foot. When you rotate during your launch you lose a minimum of 30% of your power which results in a big loss of velocity. Remember the power comes from your lower half which produces Arm Speed for maximum velocity. The beauty of the Pro Power Drive Systems is each one of our products is designed with Natural BioMechanics in mind. The only wow factor you will find with our products is the Positive Result you Will Have in Your Game. Remember, dare to compare and go with the Best that Guarantees Positive Results.