Quoted from Captive_Ball:Can't wait to see this....since I doubt I'll ever make it to Encore.
Don't feel so bad, he didn't either (legitimately). I've done it twice, and everything he says his spot on. The goal is shot making to get out of a song as efficiently as possible. Multiballs serve no purpose other than to allow you to complete songs without peril, and advance toward EBs... and thus should be staged but not stacked. I tend to avoid the high risk shots during song completion when in single ball play (thunderstruck, TNT, BIB <AC/DC targets> and utilize the other 9 (8 not including the song you're on).
Maintain situational awareness of combos and drop target completions for those extra balls, and utilize multiball for THOSE objectives only (song completion will generally occur by accident).