Took the young fella and my old lady down for a swim & cockling session today. Wanted to try Adrian's suggested but went Goolwa's main beach instead - to do the right thing & swim between the flags .
Arrived ~10am carpark was full, easily 50+ 4x4s parked up the beach towards the mouth. Beach pretty popular with families, grommets ect and a few other groups of 'cocklers' out.
Given we were pretty close to the main carpark, things were a bit thin, as expected! Still managed 100 or so in a casual hr. Only measured a few and probably discarded a 1/3. I'm pretty good eye-balling