try llanelli beach, there's a bed just off one of the slips at Burry Port or there are a number on the West part of Cefn sidan oh and there used to be some ai Pwll but I havn,t been there for a while failing that Anglers Corner and Gowerton Country stores are open till 12
I've always dug my lug from Swansea Bay. Anywhere is good along there from the back of the Marina or there's another good area park at Westcross shops and walk on low over to the beach just before mumbles about 100yrds out and dig away m8!!!
Hope it helps