Hi Mike - Welcome Aboard
I launch out of the Merrimack and normally head out to Jeffries Ledge,
about 30 or so miles East, so anything I can tell you will be what works for
me in that area. I usually use clams, but will always try shrimp early in
the season. Squid and herring chunks will also produce, depending on
what the fish are hungry for. I try to offer up a smorgesborg (I know that
isn't spelled right). I'm too lazy to jig, but a guy who goes with me often
does well with the big (16 - 20 Oz.) Norwegian that he casts out into the
drift and sweeps along the bottom as he retreives. He also puts a feathered
teaser at the top of the jig, usually blue, and gets a lot of hits on that. How
deep we fish depends on the water temp. Deeper in the summer, up to
300 - 350, and around 180 - 225 in Spring/Fall. If the boat is really drifting fast,
I'll do a "reverse troll" to try to keep the bait in one place so they can find it.
I generally will give a spot 15 minutes without a hit before I'll move, usually in
1/4 mile increments and trying to change depth about 25 feet a pop. If you have
any more specific ???'s, fire away.
Good Luck