@Rob As a rider, I think it's hard to really understand the quality of the operations below what's happening on the surface. If you take most accidents in history, things will have 'seemed to' have been fine moments before - it's very rare you get on a permanent ride, feel unsafe and expect there to be a problem - it's a reasonable expectation that you will be safe, even if a ride is rough and provides a level of temporary discomfort. You take for granted inspections, oversight, governance etc. For example, a park I have first hand experience with were fined along similar lines for not having adequate CCTV on a water ride. They had CCTV but the system hadn't been looked after, a camera had failed and a number of image components had burnt onto the display meaning spotting anyone in the water was a bit of an eye test. To a rider, it all looked good to go - competent ride op sat in front of a bank of screens, but it was not fit for purpose.