When i was last there (about 3 years ago) I was opposite the dam wall using maggots as ground bait and worm on a size 16 hook and I had plenty of the little buggers.
I also cought a 4inch perch on a 5inch lure near the nature reserve on the north shore.
My mate cought a one about 1lb on the south shore half way along.
Marky,
Marden Quary used to have a decent amount of perch in. (when I say used to I mean about 10 years since I last fished there).
Cheers,
Lee