For fishing bass and cod your'll need to switch your engine off as they get spooked, cast out slightly uptide, use a trace with two swivel hooks and try either live lug or blood worm with squid trails, for big cod fishing try stuffing a complete squid with blood worms and thread up the hook and onto the trace, this is a bit like a fishy bloody marry
look for a bottom profile with ridges as the fish like to swim up and down the gullys.
If like me you cant be bothered to make up your traces you can buy them in any tackle shop pre made and ready to go, or order them over the internet, some one i know goes out and spins for mackeral and sand eels before going further out for bass, the mackeral and eels get chopped up and used for bait.
Good luck