Has anyone ever figured out exactly what the hell Quint was going to do with the big hook he went back in the cabin for when he thought (Hooper disagreed, it was never actually confirmed one way or the other) he'd hooked it on rod and reel? It's not like you're gonna gaff the thing. For that matter I've always been a little bewildered with the seeming case of "now what" once they found it. Hook it to "trick it" to the surface to get some barrels in it? Fine, you've got a pissed off 25' great white with some floats on it...now what? I never got the impression there was much of an "end game" planned out very well.
Having said all that it's still one of the great movies of all time in my book.