A wonderful place.Never in a match but managed it regularly when I used to fish Castle Loch, Lochmaben. Even 300lb was not unusual in the late 70's early 80's. Nor was it unusual to blank on the same peg, using the same methods, the week after having a massive haul. It was up and down, depending where they rocked up at night.
I pike fished it a great deal and can remember 2 red letter days when a mate and I had well over 100 lb of pike with fish to 26lb.