I personally feel a lot of the criticisms are ridiculous. If you go to an Indiana Jones film, you can't gripe about the over the top action, insane close calls, and extreme elements of the fantastic. You can't tell me the climax of this film is anymore unrealistic or hokey than the knight in the cave of the Holy Grail (or the Grail itself for that matter), or the Sankara Stones in, "Temple."
I kind of liked Mutt. He was like the poseur greaser. Not really a hard ass, but trying real hard to be one.