Maybe I'm crazy, but I think I've figured out why John McEnroe has that funky volley. I tried hitting an Eastern forehand with that same head position and that did the trick to hit an Eastern forehand. Tried it on volleys and it works too. I believe that John's volleys are really just drive volleys. May vary simply having little to no swing. This is about his forehand punch volleys. I never seen his backhand volley so I can't comment on that.