Good advice. I'd just add that you can also use fish flesh (no skin!) and you will need to make up a bucket or two of mashed bread and any other noxious additives to keep them nosing around. Mullet are very sencitive to the tidal state - some marks only work on the ebb, some on the flood, some at extreme low water, some at high water. Just experiment a bit. And the very best time is almost invariably at dawn.