My mate uses a trolley too. I saw him today and we chatted for a bit. Anyway, he gets round to telling me a story about him from last week. He was topping up his main container as he went along (he carries his DI vessel with him). He did 10 houses and noticed something at the bottom of the container. Guess what it was? A friggin fish!!! He thought I'd put it in at first as a joke, but came to the conclusion that a cat or a heron had dropped it in. I PMPL. This can't be true can it?