Footwork is waaaaay over rated. Actually, its not even necessary in tennis. Its absolutely useless! All you gotta do is just hit aces and service winners when you're serving and hit winners off your returns. That's it! Pfff, tactics who needs those when you can cream the ball like Rosol at Wimbledon.
Throughout your life advance daily, becoming more skillful than yesterday, more skillful than today. This is never-ending. - Hagakure