The minimum requirement for kayaks and canoes (whether paddling or adrift) conforms with U.S. Coast Guard Rules for a "vessel under oars" requiring "an electric torch or lighted lantern showing a white light which shall be exhibited in sufficient time to prevent collision."
...Thats it...Pretty simple
No red and green lights on the bow unless you are under power.
An all around light is always a good idea at night...required or not...
