Looking to spend some extra cash man?
Just another thing you don't need. LOL
Had my stock for 3 1/2 years now. Every year in the salt. And you know i fish alot. Never had a problem and still havn't blown a bulb. Don't really need sealed cases. Just bottom venting ones. Water never goes past the water line no matter how deep you go, and they always drain. And replacement for all the lights on my trailer are cheeper than just the tail light leds.
And think how pretty they would look to a theif!!!? I've already had my side markers stolen twice. Something to think about.

Electronics engineering has taught me LEDs are not as durable as most will have you believe. It's a diode and sensative to temps and impacts similar to filaments though slightly more giving.

Drop the 60$ on something important like an automatic inflating slimline PFD. Very nice!!!! Great for rivers too! Remeber, LEDs cost less than 10 cents at the elec. store. More LEDs means more of a rip-off in my book. Just like HDTV, just a rip-off.