fished the bottom lakes twice during Xmas break. Fishing the method was very patchy...had 3 carp ,some f1s and bream on the Thursday after Xmas and last Saturday had 20 carp, in January, it was mad, not counting a handful of bream and f1s. Nothing huge but a bent rod was much appreciated.
As for top lake i think small ones have been being caught to the matchmen, pellet would be my first choice if someone held a gun to my head and made me use a pole...