Try the contacts page at onepocket.org. I'm pretty sure the organizer is from the general vicinity of manchester.
I spend my weekdays about 15 miles south of their in Merrimack, but I usually don't get back there from my weekend home until mid afternoon. I think the majority of Mancesters pool is in private clubs. There is a room of sorts in Merrimack, probably don't have any tournaments.
If you've got a car and want to drive about 30 or 40 minutes, THE place around there for action and tournaments would be Country Club in Chelmsford, MA. http://www.countryclubusa.com/