Spring cod in Cape Cod Bay are a rare find these days. No doubt they are there but the doggies will kill ya. Just north of Sesuit harbor by the number one can is an area called Dennis Ledge. Full of rocks, boulders and ledge. Draggers can't work there and historically there was always a March codfish bite there. 10.5 fathoms of water. You'll know it by the irregular bottom. Might be worth a shot. Mackerel often show there in Spring as well.
The bay must be shoaling up there, Steve. Last season, there was only about 44-52 feet of water there and on my poor sonar, the bottom looked almost flat.
Bill
Bay & Beach Inspector
Everything I write is firmly substantiated by my own opinion.