that point has been raised many many times. i do realize that. forehand backhand open or closed stance. the whip will cannot crack unless there is an anchor to hold the handle back which is the strong left side. we are not sure about the wrist, leaning back, stepping in, push pull, closed stance or open stance, using your legs, early or late racket back etc etc. so what can we say conculsively are necessary conditions of a open level fh?