WHAT IS DOWNSWING SLIDE?
A slide is any excessive lower body lateral movement toward the target during the downswing. This makes it very difficult to stabilize your lower body during the downswing, which will eventually decrease power and speed from the upper body through impact. Once the lower body starts its forward shift into the downswing, its job is to transfer energy to the upper body and provide a stable base for the extreme rotary forces created by the torso, arms, and club.
EXERCISES AND SWING DRILLS FOR DOWNSWING SLIDE