I have it set to 3 balls, plus all my games are set to 10 second ball save (if they offer it) although some times I don't know if it works on WOZ. I have set for many extra balls, which must be earned i.e. 10 YBR's etc. . Originally I wanted to go 5 balls because I had such poor gameplay I couldn't get to 2nd base after ECMB. The new code has changed things I do much better and frankly the game is much more fun to play.
I have only melted the witch once and have had a chance about 5 times after the newest code.