I've only owned 4 games, with 3 of the 4 having 3 ball multiball, and one having 2 ball (Taxi). Of the two I have now, I find myself letting the first ball in 3 ball multiball in FH drain so that I can try to hit the trapdoor with the second. In Taxi I can usually hold a ball and try to shoot with the other, but with only two balls it's easier to lose multiball.