Dunno if you can still get there but below Frazers on the quay, also the rocks to the right of the fish quay beach (only on big tides as it's the 2nd bed of rocks you want) otherwise the left of the beach, south of the river infront of the boat yards/fire training all the way along, get down the ladders infront of the new houses near the groin. For lug, boulmer or St Marys, infront of the sewage next to the rocks. There will be many other spots but those are where i used to dig. Hard work for the rag, best taking a fork & spit.