Shoot up top via right spinner until left and right bonus lights are lit and double bonus is lit at the left saucer, then shoot the left saucer to collect on repeat.
Plunge to the top saucer
There are two bonuses as depicted on the center of the playfield art. They can both be collected at the left saucer when their respective light is lit. (Each has a base max of 29K)
The top saucer awards the corresponding lit arrow awards, advances both bonuses by 3, and lights the right spinner:
left arrow - lights left bonus at the left saucer
Right arrow - lights right bonus at the left saucer
Green arrow - lights double bonus
Subsequent shots to the top saucer when arrows are already lit are worth 5K
Shooting the left saucer before bonus lights are lit advances bonus, so is still valuable.
Recovering from saucer kickout or a rimmed out saucer is crucial
On 3-ball play: left saucer awards +3 bonus advances to both left and right bonuses
On 5-ball play: left saucer advances +1 bonus advance to left and right if no light is lit
Completing the A - F letters lights a 20K special bonus awarded only at ball end. Completing the letters again increases the super bonus value to 30K. After that completing awards a special (50K).
On 3-ball play: A, C, & E lanes advance left bonus
On 5-ball play: B, D, & F lanes advance right bonus
Earning a special bonus is carried ball-to-ball
Completing the right 4 target drop bank awards (5K, EB=25K, Special=50K from there on out)