I was approaching a bridge near the London Canal Museum recently when I accidentaly snagged an angler's line. I'm slightly short-sided and, though it's not a problem usually, I don't really have much hope of seeing a fishing line at 50ft or more, especially when my attention is on the approaching bridge. He immediately became very irate, shouting at me and waving his beer can and running along the bank. I put the engine in idle but he was yelling at me to stop, as if the line could be retrieved from the prop! I tried to explain that all I could do was put the boat in reverse, but that it probably wouldn't help, at which point he yelled that if I was nearer the bank he'd give me 'sumpin'. I tried to explain that I had done everything I reasonably could in the circumstances and that the line was his responsibility. I got torrent of abuse and told him to piss off. Later, coming back the same way, I stopped on the far side of the bridge until they saw me then I proceeded dead slow. They waved me on but contrived to leave a line in my way (it could only have been deliberate). The individual concerned ripped the line from the boat and then began launching the weighted line at me, trying to take out my windows.
Being both stupid, and optimistic, I rang the police to be told someone might be around in about an hour. I told them not to bother.
The seem to catch a lot of Red Stripe, Carlsberg and the like. I wonder if there's any claret or bitter in the canal - you never see them catch it.