I just went and had a look behind Smithfield Freezing Works. Disgusting and everything covered in green slime. Must be a lot of Moki around there with all the mussels.
Looked like a real deep hole at the end of the rocks going North right where the beach starts. Hard to tell because the sea was dirty and rough but it looks like a real steep beach straight into a deep hole with a massive rip at the end of it. That should be good fishing surely?