I stuck with this film right to the end, mainly out of nostalgia - it reminded me of the trashy 'B' movies my friends and I used to see on the late show at the local flea pit. The scenery is quite stunning and, as a teenager, I know I would have enjoyed all the footage of our heroes riding their trail bikes through the wilderness (accompanied by banjo/fiddle music) and getting into scrapes with local hillbillies and law enforcement. The plot is quite lame, the sort of thing you'd expect on an episode of The Dukes of Hazzard, albeit with a deadlier outcome. The action scenes are unconvincing, especially (spoiler alert!) when the hero gets shot several times but just walks it off.
The sound quality is dreadful. I can't tell if it has just deteriorated with age, although I suspect it was never very good. Half the time you can't hear what people are saying, although from context you can tell that they're probably not saying anything that matters much.
I won't be going out of my way to watch any more of William Grefe's output.