UV light strip is non-waterproof but that's all I see wrong with it. You'll have a floating rave club if you put the whole roll in! Underwater light looks interesting depending on how long the cord is and what kind of connection it has. I assume you would be using it as a submersible? Guess you could always throw a couple alligator clips on it for 12v use. Don't really know much about the safety of such a job either. I don't think an underwater light specifically designed for fishing is really that expensive is it? Something like this: http://www.ebay.com/itm/Berkely-Subm...item19ea803f76, could be found at wally world. It would be cheaper with a lot less uncertainty in my opinion.