Sporting good items for the purpose of enhancing golf game performance, namely, practice nets, weights, elastic swing trainers and golf club swing aides, namely, wrist supports, elbow supports, shaped golf club grips, hinged golf clubs, weighted golf clubs, add-on weights for golf clubs, body harnesses conforming the body to a better swing, wrist and elbow restraints, plane-of-swing cages, impact-sensitive tape for application to the face of golf clubs, mechanical guides to direct the swing a...