Ian, yes to the chub fished the Trent for a couple of nights in June and I could not keep a rod in the water for the cheeky buggers! Was surreal unhooking 5lb chub after 5lb chub in the edge! I said at the time, didn't care if I don't catch another all season, thankfully I've not had that many since but the Yorkshire Derwent can be hard work avoiding themAnd as for chub! I've not caught so many for years. All as the light begins to fade and into darkness. I don't know if they feed all night as I always pack up at 11 pm.