reminds me of when I was a kid in the UK, there was these places that was called 'funhouses' where kids was supposed to play, I was seriously terrified of dying. I'm unsure if it's my memory and/or if I was just too young
https://www.westland.net/coneyisland/articles/steeplechase2....
the other scary thing you could do with it was to grab hold of the plank on the up-swing, which would boost you high in the air. you had to have a nice touch of judgement on where you let go, if you didn't want multiple broken bones.