When I used to play I would never step on the lines, or if i accidentally did with one foot, I would have to immediately step on the same line with the other foot to cancel it out! I'm not a superstitious person either!
come to think of it, I still do this now! weird!
I tweet - @ashtennis guru (no spaces)
I Shoot - www.flickr.com/photos/ashtennis guru/ (again no spaces! grrr)