Visible crew/equipment: When Voight is making his way down the cliff face, he is rappelling. You can see a crew member feeding him rope at the top behind the trees.
Deliverance (1972)
1 visible crew/equipment mistake
Directed by: John Boorman
Starring: Jon Voight, Burt Reynolds, Ned Beatty, Ronny Cox
Revealing mistake: In a scene where the canoes are shooting the rapids through a sheer cliff you can clearly see a stuntman climbing out of the water onto the rock.
Mountain Man: Looks like we got us a sow here instead of a boar.
Trivia: At the end of the film, the police officer advising Beatty and Voight to go away and not to come back is James Dickey, the screenwriter and author of the book the film is based on.
Question: What exactly happens to Ronny Cox? Does he get shot by the sniper, does he fall out of the canoe and drown, or does he commit suicide?
Answer: Just like Burt Reynolds says. He clearly yells out "he was shot."
Characters can be mistaken. The director left it intentionally ambiguous. Ronny Cox has stated in interviews that he played the scene as if the character had simply "shut down" and given up on a world that no longer made sense.
Answer: No wound. Shook his head and dove from the canoe. Refused his life jacket. Just ridden with guilt as he was dead set against burying the hillbilly.
It's ambiguous. In an unused shot from that scene, Drew does grab at his head before falling overboard. Still, I too think he simply passes out from the stress.