I rarely jump, but I notice many pros that do it seemingly as much as possible. Is there some secret method to improving my forehand that nobody told me about?
how is it useless? you get power by pushing from the ground(not necessarily a jump though). you push from the ground roughly around the time you hit, which would cause you to make contact while in the air.The posts above me mostly are correct .
Simple fact is if your in the air before the racquet hits the ball its usless and mostly a show instead of skill .