There's definitely a good movie somewhere in Jaws 2; maybe just one without so much shark. Sadly, most of its narrative problems seem obvious to fix. For example, if the shark isn't confirmed and Roy Scheider might just be suffering post-traumatic stress… maybe they didn't want to go dark.
Instead, the filmmakers go bright, shiny and stupid. Director Szwarc doesn't do particularly well with his actors–for some reason Scheider is frequently staring into the camera and past whoever he's sharing the scene with–but most of his composition is fantastic. And Michael C. Butler's photography is gorgeous. Jaws 2 definitely looks good. It sounds good too–John Williams's score is great, the sound design on the film is great.
It's just really dumb.
The film slaps Scheider's story of bickering with town officials in front of this “teens in danger” movie. The stuff with the teens doesn't get enough time once they're in actual danger (and too much time before that part of the film), but there are some sublime moments.
No one in the film is particularly bad, except Donna Wilkes, and there are some acting stand-outs. David Elliot, Keith Gordon, Ann Dusenberry, Mark Gruner–all good performances. Lorraine Gary gets a few good moments as Scheider's wife, though not enough. There's a strange subtext about her having a career being a big problem–she's even wearing pants right before Scheider gets in trouble at work.
It's long, it's bad, it's pretty. The technical pluses oddly outweigh all the other minuses. Kind of.