The first step to locating bream on any water is to smell them. If that is true, and it probably is, then the fish you smell are bream. You can smell them in the water. The best way to describe the smell is kind of fishy. I simply cruise along the rocks until I smell fish, then I start fishing.
Crickets are the best bream bait anywhere and nothing works nearly as well along the rocks.
Since bream eat mostly insects they watch the top of the water constantly. A cricket falling off a rock is the most natural thing in the world to them. I use the lightest spinning rig I can find with light line and no weight. Simply pitch the cricket up on the rocks and wiggle it until it falls into the water. It doesn't matter if the cricket floats and kicks a few times before sinking.