Saf-C 403.16 Lights on Non-Power Boats.
(a) Boats propelled by oars, paddles or other human or natural device except sails, operated on any public water, shall, between sunset and sunrise, display one white light in a conspicuous position, so placed as to show all around the horizon.
Link:
http://www.gencourt.state.nh.us/rules/saf-c400.html
Question: Does a blinking (strobe) light comply?