I'm a also a member of D.D.A.P.S & live 5 minutes from dartford lakes.
I have fished it a fair bit with some good results.
There are some lovely carp in these lakes but the condition of the banks & paths are awful. although it is part o D.D.A.P.S its also used by the public as well who im affraid treat it as a dumping site for all there rubbish. it's dirty, smelly & there are no toilets or bins around the lake, so it no wonder really. As other have said i wouldn't wanna do a night fish down there, if you do don't expect to find any of your fising tackle in front of you when you wake up in the morning, its well known for things to be knicked.
Going back to the bait, i mainly use the method/ ground bait for my fishing with either a real or artificial bit of corn or pellet on a hair rig, & only a short hook link.
I think if your going down saturday you are going to find it hard at he moment with the weather still all over the place, but i wish good luck & happy carping.