I must've watched Jaws II about a dozen times on ON-TV as a kid, which would explain why, when I saw parts of it last night, I seemed to know just about every line of dialogue. And you know what? The movie's not that good. The first Jaws only seems to get better with age; the second one now just looks like a generic 70s teen horror flick. Kids disobey their parents and sneak out to try to have sex, so a monster eats them. Yawn.
That said, if you enjoy watching people tie knots, Jaws II is a real treat. It's about the knot-tyingest flick I've ever seen. Oh, also, the shark eats a helicopter, which is pretty novel.