I've been thinking about bringing out my own lights next winter(god/state of CA willing). I've talked to some people and found that Xenon lights in a waterproof housing would work great. You can even run it for a couple of hours off some of the larger 12v we bring out. My only unanswered question would be the wattage necessary to bring the squid up. Any thoughts? C'mon Dgax, I know you've got some ideas.
Here's a good site for size and wattage draw for lights. The prices don't seem too bad either.
http://www.xenonlightshid.com/