They will be there Hardy. Prove it to yourself by fishing it at night and catching a bundle, then you can fish it in the day for the odd one and be HAPPY!
Forget the prawns and catch some paddle crabs (try some old bait in a pair of pink tights, that should do it.) Bait up like this and you are sure to score.
Be positive and don't give up if you miss out a couple of times. I can take you to fantastic lemon beaches and we will miss out occassionaly.