I don't want to be "the heavy", but since you're asking the question, I'm assuming you haven't taken the NH boating course, and don't have the certification.
It is
the law that you do. (Unless you have USGC Aux, Power Squadron or something equiv.)
If you have one of the equivalent certifications, I'd
highly recommend brushing up on N.H. laws, as boating in N.H. is very quirky, and you
will get pulled over and fined on Winnipesaukee for breaking laws that you would never otherwise know about.
If you
don't have these certs, you
must get the N.H. Certification.
http://www.boat-ed.com/newhampshire/
Just trying to be helpful...