Notaro, cod fishing is a verticale presentation, you maybe want to try Nutt Island peir with a rig like that, or maybe a little heavier depending on current and jig straight down from the peir. they do come into that area.
Macojoe, you ever put in at the Weymouth back river ramp? you are more than welcome to put in there some time and follow me around and I will put you on some spots in the area as well as anybody else looking to learn the area.