Put powerballs in one game.
Wire foot pedals that control the flippers and require play with no hands
Pairs of players - let everyone only play ball one. Announce the pairs switch their player number for the rest of the game... so he that is winning after ball 1 is suddenly losing going in to ball 2.
-Rob
-visit http://www.kahr.us to get my daughterboard that helps fix WPC pinball resets or my replacement LED display boards for model H and model S Skee Ball