[vj]

At the Fed Ex i worked with a player on this exact thing. It appeared at first he was mixing an arm stroke and a shoulder stroke. Upon closer look his right wrist was breaking down.

We put a tee in his watch so that any movement in the forward wrist would result in the tee "poking" the back of his hand.

So if the best in the world do it, I am sure amateurs can as well.