There was a nasty story a while ago about a woman who wore stilettos while watching boats come up the Foxton lock flight. She was walking on the grassy bank above one of the lock chambers when her stiletto heels sank in the soft earth, sending her toppling backwards into the feed pond that provided water for the lock. A boat was coming up the lock and she was sucked into the sluice as it filled the chamber. She somehow went through the sluice along with a few thousand gallons of water, and emerged in the narrow lock chamber bobbing around with an 18 tonne narrowboat. How she didn’t get drowned, crushed or chopped up by the prop is anyone’s guess. But she emerged unscathed. I’ll bet she doesn’t wear heels around the locks again though!