Humminbird makes a portable battery powered one that might work, hard to say with the space constraints. I've used one, they work good for depth and temp.
I think I might make an appearance, always fun to watch the Passion of the Christ auditions... Not many people out there cast worse than I do but I usually see a few at the show that make me appreciative of my ineptitude.
I have one of those flip-out William Joseph ones. Keeps line from tangling in whatever may be at your feet in a boat. I use shooting heads alot, so I have alot of running line hanging around for repeat casts. Works well, I find.
Hypocrisy always amazes me. Just like the Auto Executives that flew private jets to Washington to go cap in hand asking for bailout money, with a sob story about how they were going to "streamline" their operations.