I found that the battery fits great in an old tackle box. I used a piece of Styrofoam to fill the void and keep it secure. Also, I mounted the breaker switch so I could flip it from outside of the box. Remember to check all of your wiring connections. I had quite a few that were loose.
I plan on installing a waterproof key switch in the future, along with a trailer plug for the battery plug-in. I'll post those modifications when I get that far.