Get two bubble mailers, get $3.00 worth of postage on each one, put your SASE in your envelope and what I do is put the ball in a ziploc bag and a BLUE ball point pen in there as well, put it in your envelope along with your letter. don't send a crappy china ball (synthetic leather ball) send ROMLB or some ball without synthetic leather. seal it and send it

good letter = sweet spot signature.