I watched the Class Action Park one as well. I remember wanting to go there as a kid. I had a tendency to push the boundaries at parks, because I always presumed that they were made so you couldn't do anything dangerous. It's probably a good thing that I didn't go to Action Park.
First heard about that place my freshman year in college and went that summer (1979) and at least once every subsequent year until a year after I graduated.
At the time I thought it was a blast, but on retrospect, it was pretty insane.
Found a magazine article (which may have led to the documentary) not quite a decade ago and (in part due to the humor in the recklessness when college aged in comparison to beind well into adulthood) showed a few coworkers and stated in no uncertain terms that I would never allow my son to go there if it was still open (he was in HS at the time).
Our first trip there was likely within days of the first death at that park (did not fond out about this one until may years later). The young man was basically my exact age (found this out in the documentary) and he died on the "luge", which was basically a long fiberglass track that you went down in a kind of stripped down sled. I ripped up my hand grabbing the track to keep from flying off in a turn. The guy who lost his life went off the track and split his skull open when he landed.
A few years later a kid got electrocuted on the kayak pond. They installed a machine that created "rapids" by supplying pressurized air. They never grounded it properly so when the kid came off the kayak (due to the rapids) he step on something and that was it.
The shenanigans the owner pulled to try to avoid blame (and liability) were criminal in their own right.