The key to catching Rock at the dam is moving water - just like in the bay.
Most guys use surf rods so they can cast very far to reach the fast water. I've done well with a 1/2 oz white bucktail with a white 4 '' twister tail.
The trick is to use a 1 , 2 or 3 oz in line sinker about 2-3 feet in front of the bucktail so you can cast it far enough. 2 oz works best most days.
General idea - if looking straight out at river and dam is 90* to your left. Cast to the 10:30 - 11:00 position and retrieve lure as it gets swept down stream. Most hits will occur as lure swings into the 1:00 - 1 :30 position.
Right at dawn often is great - if water is moving. Close to sunset is good too. A cloudy / rainy day often sees them biting all day plus less people there.
What could be more mundane than dying of old age or of natural causes when there is death by misadventure to be pursued ? Skip