Hi,
fished it season before last, Idone a 12hour night session i used Premier matrix boilies with pva stringers. I caught 3 carp, the biggest just under 15lb all on my margin rod between 5am and 6am. I also had a 4lb bream on one of my other rods about 50 yds out at about 2330hrs! I didnt put much bait out only boilies and a bit of groundbait, but i wouldnt be afraid to put a good bed of bait out as the place is huge and theres quite alot of small stuff in there!
Havent fished there much tho, like i said havent been there since season before last but i saw on the news and in the papers that they had a quite a few fish die in there quite recently but im not sure how many or how that will affect the fishing!
Hope this helps....