I spent a season working one of the rides at Coney Beach back in the 70's - it was a great job for a 14 year old, shit pay but the rides were free.
It was the year there was a terrible accident on the ride next to mine. I can't remember its name, but I used to go on it a lot - it had two large baskets which revolved around each other while ascending to almost vertical. Someone eased themselves upwards so far that their head extended over the top, hitting the control booth on the way back round. Horrific.
I also remember the Enterprise ride which I took my then partner's two kids on. That feeling of hanging upside down, the ground far below, no centrifugal force to stick you to your seat, was truly terrifying. It was a case of never ever again for all of us.