I'm a little confused on the for those about to rock mode. Am I supposed to hit the non-middle target to increase the song jackpot, and hit the middle target when I want to collect it? It might just be hard to tell with standup targets but it seems like sometimes the middle target isnt available when I dont think I've hit it, and sometimes there are 3 target options (including the middle). I didn't see a good explanation in the rules write up I read.