US Patent 7798910 Golf swing training device and method

A golf swing training aid includes a shaft having two sliding elements magnetically attached to fixed positions on the shaft. The sliding elements slide along the shaft from initially coupled positions to impact positions during a backswing and downswing movement simulating a golf swing for providing distinctive sounds at selected impact positions along the shaft to aid in setting the shaft when executing the backswing and lagging of the shaft during the downswing. Grip protrusions are biased against webs of the fingers for enhancing power generated during the swing.