JAW 1971
I'm no expert... but I found this out there in an old post (2004)... I assume this is still the rules.
Just Sold
08-15-2004, 01:02 PM
Here is the Boating Guide of New Hampshire section on rafting. Read the 
underlined section. I know it is discussing "rafted boats" but I think an anchored raft or moored boat meets the same requirement of this law. I hope it helps.
Rafting in New Hampshire
Raft is defined as “any group of 2 or more boats which are stationary upon the waters of a lake or pond and which are congregated together, whether anchored, secured to one another, or adrift, provided that at least one of the boats in the group is occupied.” Rafting is “forming or being a member of a raft.”
-There are designated locations and times in or during which the size of rafts are limited and a minimum distance is required between boats and rafts.
-Currently, there are rafting restrictions in certain locations on Lake Winnipesaukee, Lake Sunapee and Ossipee Lake.
-No one in a prohibited location or at a prohibited time may:
Form or allow the boat, which you are operating or in charge of to join a raft consisting of 3 or more boats.
Form or allow the boat, which you are operating or in charge of to join a raft if any part of such raft is: less than 50 feet from any other raft; or less than 50 feet from any occupied single boat, which is stationary on the waters of the same lake or pond.
Anchor a single boat and cause it to remain stationary on the waters of a lake or pond, other than momentarily, if any part of such boat is: less than 50 feet away from any raft; or less than 25 feet away from any other single boat which is stationary on the waters of such lake or pond.
Someone advised you to buy the Bizer Map.. good advice... it clearly shows the "no rafting" area's
Like the NH state signs say as you cross the border... "You're gonna Love it here!"
SteveA