new to carp fishing - need tips.

Ok - new to this carp fishing game.

went to a day ticket place (Fennes in Braintree Essex. (Hill and black
pond)) and blanked two evenings on the trot.

Tried boilies with PVA bagged pellets on a helicopter rig. (about 6-8
freebie boilies and a couple of dozen pellets in each bag)
tried hair rigged luncheon meat. (chucked out some freebie bits of meat in
a PVA bag too)
tried floating dog biscuits.. (they ate every one bar the one with the hook
in it)

how would you recommend a newcomer to carp fishing go about getting 'em on
the bank.

I use one rod..
should I be fishing the deep water?
the margins?
am I not giving enough freebies?

SS