I think you have to trap and choose your shots as you need to make them. On Whirlwind I've got it down perfect. I trap at least one ball on each flipper or preferably two on the left and one on the right, then I will keep back handing the one on the right flipper into the kick out hole and keep nailing the left ramp for as long as I can. With the increasing jackpot on each made ramp you can build up some huge point totals. I try to trap on others but don't have as much success.