Do know what to do for your warm up? Here is a hint, pick a place or a ( if advanced bowlers a board number) say 20 which is the center dot on the approach. Roll 2to 3 balls from this, after that the fourth ball watch where it enters the pins. If it is left of the head pin , move left, if it is right move right. it is that easy to find your line to the pocket. Good Luck and remeber to PRACTICE......!!!!!!