Silver only collects during ball. Gold only collects when you drain. Consider aiming at 5 and 6 targets to double bonus if it is high.
Completing standup targets 5 and 6 lights double bonus.
Maxing silver bonus lights one of the spinners for 1000 a spin
Lit top 2 star rollovers advance gold bonus on plunge. Once the top middle star rollover is hit, the gold bonus rollovers are no longer lit