Probably be fishing mouth of Merrimack and down around point judith.
i wouldnt even try the mouth of the merrimac with a 20 horse motor. That current moves.
Had a 16ft Starcraft deep v. Been out halfway to block island in it. Also been in some 4-6 ft seas in the same area when reports were 1-2 feet only had a 20hp on it so made climbing the swell a little scary. Sold the boat last year now I have an old town pdl kayak then I hit the ocean with