Comparison of some lights...
Yachtlights Photo Gallery :: Underwater Light Comparison
I may wait until next season. The price is coming down as more and more competitors enter the underwater light sector. I want something fairly powerful, I don't want to go thru the effort only to see a weak glow back there.
There is such a wide range of product. I think a heavy duty surface mount light would be OK for a transom mount in a protected area (under a swim platform) but I would not want it facing down. Guys screw all kinds of stuff on the transoms (transducers, tabs, etc) no reason why lights would not be ok.
customer photos
http://www.yachtlights.com/gallery/customers