Either of the standup targets gives you a joker. It's not side dependent, if that is what you were asking. The devil on the jokers is, you have to get them all on one ball, or out they go. And they can be a sucker shot, can result in a SDTM. The swinging target can also if you miss.
The plunger shot is crucial. It's 150 points, and can be 250 if the 100 point bumper below the rollover is lit when the ball comes through. Gets you a card, also. The genius of the bumpers is you get all of them lit and the rollunder is worth 100, but then the ball comes down and hits a rollover button and turns off either the green or yellow bumpers, and there goes your rollunder.
The key to whipping it by score is getting that plunger shot, and getting the 100 point bumper lit and keeping it lit with the ball up there. Hitting the dead bumpers up top, which is easy to do when the ball is up there, will advance the card that is lit and turn it off.
You get a replay at the end of the game if you have all the cards lit. There's just so many things to do on the game. One great design and rule set. I'm not at all saying Heat Wave isn't a good game. It is. Might even be a great one. I just think there's more to accomplish on RB and I've always been kind of surprised by their respective rankings on IPDB.
If you come here, you're welcome to come play it. We have a couple of other games in common, Ding Dong, which I still own, and Triple Action, which I restored but have sold on. Fun game though.