Just for Kicks and Grins
Having been required to study the Colregs here is one of the lesser known requirements that are not usually widely known. I have heard that there was a FWC (Fish and Wildlife Commission) Officer who did know this rule and cited many for violating the rule. I have not heard of this recently though.
http://www.navcen.uscg.gov/pdf/navRules/CG_NRHB_20141118.pdf
Rule 23
(d) (i) A power-driven vessel of less than 12 meters in length may in lieu of the lights prescribed in paragraph (a) of this Rule exhibit an all-round white light and sidelights; (ii) a power-driven vessel of less than 7 meters in length whose
maximum speed does not exceed 7 knots may in lieu of the lights prescribed in paragraph (a) of this Rule exhibit an all-round white light and shall, if practicable, also exhibit sidelights;
emphasis was inserted by me
Another quirky deal in all of this I have not found on the packaging of any of the "portable" lights stating that they are "Coast Guard Approved" as are the majority of the fixed lights.
Not proposing anyone do anything differently here just fun stuff for Nav Rules geeks to discuss in the bar.
The one important issue I'd ask everyone one to consider is you can't be seen the guy with a drink in one hand and a girl in the other is not going to be able to avoid you. This applies to dinghies, kayaks, SUPs, all of them. A strong flashlight to shine on an approaching vessel and an uncomfortably loud horn may make the difference in being noticed and being run down.