Re: LED transom lights
I have two Lumitec Seablaze 3's
I love mine, but I dont really use them all that much either... Mostly at the dock or at anchor to watch the fish swim around them, which is pretty cool. Whether they are worth the money they cost or not is a personal choice.
They don't leak. If they leak, you installed them wrong, or they're junk.. Which leads me to a bit of advice:
Dont buy cheap underwater lights. There are many good underwater light makers, and there are many more cheap knockoff makers. The cheap ones often leak into the lenses, draw excessive amounts of power compared to good ones, heat up to such a degree that they can't be run on plane, and other such defects. Good lights are generally priced from about $150 and up per light, and some get extremely expensive. More money does not necessarily mean a better or brighter light in the underwater lighting market, but it definitely means a quality light. My seablaze's were about $215 per light if I recall, and they are vastly superior to the cheapie's I had on my last boat (which leaked into the lens, eventually).
I would not buy a drain plug light because of the inconvenience of having wiring attached to my drain plug, but I suppose if you keep your boat in the water and dont pull the plug, this is essentially a moot point. I would, however, prepare yourself to be disappointed with the amount of light a drain plug light will put out once underwater - especially if you boat in freshwater, which I'll assume you do based on your location. Some lights look very bright out of the water, but lose much of their effect once immersed.