Go to the sporting goods store and get the smallest (ladies in a fancy color…LOL) medicine ball…and around 4-6 pounds and slightly bigger than a softball. Grab it in between your two hands, get in a good balanced golf stance, engage your core muscles and swing it like a golf club.
Use the momentum of the first swing to continue the motion back and forth. I do 50 at a time.
That will also teach you the feel of proper shoulder rotation, forearm rotation and hip/shoulder sequence…and rhythm…and not strain the micro fibers in your hands and wrists that a weighted club will do.
This is a good workout and will help your golf swing without risking injury. Don’t do more weight than you can handle, as a lot of weight is not necessary.