One night when were about 14, two of us went night fishing and set up with our brollies together. About 3 a.m something shook our umbrellas really hard, just once, so we kind of hoped we had imagined it. About half an hour later, it happened again, and being brave, neither of us wanted to look and see what it was. We could hear something/someone walking round in the long grass behind us for the next hour or so, but again, neither of us wanted to be attacked by the possible escapee from a psycho hospital. Never been so pleased to see daylight and we never found out what it was. (Thankfully)