The marina is a mud flat at low tide. Walk out damon point on the north side, half mile or so, you will be heading east, as it starts turning to the south there is a ledge for a hundred yards or so, drops off to 15-40 foot, I would try to walk and cast for that hundred yards and try to get over the ledge. I have marked fish in there when crabing, they were on the ledge so they might be rock fish

. I would hit it on low tide. Good luck.