Disclaimer: Every state is different, every part of every state is different, every law enforcement agency in every part of every state is different, and each LEO may interpret the law in a different way.
I wanted blue strip lights down the side of my toon for a couple of years, but I was unsure if they were legal or not. After seeing more and more pontoons displaying them (a factory option on many), last winter I installed a 16' strip of blue waterproof LED's down each side of my 22' long pontoon.
Here is what I know about SCDNR officers patrolling Lake Murray in SC:
There are two SC laws that could apply:
1) You are not allowed to display
flashing blue lights unless a law enforcement officer is on board.
My blue lights don't flash so I am good here.
2) Any lights displayed while under way have to comply with USCG rules. The pertinent section states, "no other lights shall be exhibited, except such lights which cannot be mistaken for the lights specified in these Rules or do not impair their visibility or distinctive character."
(link
http://www.navcen.uscg.gov/?pageName=na ... ent#rule20 see Rule 20)
My boat is 22' (+). My light strips are 16' long. So there is a 3' gap between each end of my blue lights and the ends of my boat. I don't think they interfere with my red / green / white lights. But that is my interpretation.
So at the beginning of the season, I asked the head DNR officer for the lake, who is an acquaintence of mine, to come over and look at my installation. I asked him specifically if my lights were legal and he said yes. I asked him point blank if his officers would have justification for stopping me based on my lights and he said no. So I think I am good.
Ironically, he pointed to a big center console with blue lights in the T-top and said those sometimews appear to be flashing blue while underway in chop. He said he personally chased one all the way across the lake becasue he thought it was a LE boat and it wouldn't respond on the radio so he thought an officer was in distress or the boat had been stolen. But he said there is no way an officer would mistake the long strip lights on a pontoon for a LE boat.