Trying to build a underwater flood light for 12 V DC in Saltwater

[broadwayjoe]

I need some help. I am trying to build an underwater light set-up for flounder gigging to meet the following conditions:

1. Saltwater
2. Used for Bottom illumination in water 3 feet deep or less
3. 12 V DC Marine Battery
4. Best compatible epoxy or waterproofing material if I were to make a housing from PVC fittings
5. Flood style/Wide Angle (or recommendation)- Only need to project the light around 10 feet
6. Need to project the light in three directions around the front of the boat (probably 3 lights/3 strips)
7. No more than 6-8 hours per use

I have seen lights utilizing rigid strips but they are not very bright. I was wanting to build something using the Cree XML T 6 Leds, possibly 3 per light. Any suggestions on LED's, heat sinks, drivers. Let me know if you need more information.