Shot in November, 1972.
The young guys in the pick-up were locals from Naples, Florida.
The original script had hardcore sex scenes in it.
John Winter wrote a script for a sequel that would have reunited the main characters in a cabin in the woods, but it was never adapted into a film.
According to star Gini Eastwood after shooting scenes deep in the swamps she spent weeks picking chiggers off of her butt.