Hit the captive ball until the yellow targets are lit. Hit yellow targets for points, bonus, and bonus X.
Don't forget that there is a center post
Hitting the saucer when not lit for Collect Bonus will add bonus based on the current position of the captive ball. For example if the ball is at position 3, you will get +3 bonus. If this maxes your bonus, you will instantly collect it.
Bonus X is increased by completing all yellow drops. Hitting the captive ball to the top and "Returning to Base" makes it so either only the left bank needs to be completed or completing either bank increases Bonus X.
"Add Bonus" adds 1k to bonus.
"Advance Bonus" adds value determined by the vari-target position (green numbers).
The collect bonus hole lights when bonus is maxed.
Red drops are largely unimportant for scoring. Each gives 500, completing gives 10k. Completing BUCK resets them and lights special.