Don,
If you put that bed liner coating on the bottom to help keep it clean, I'm wondering if that will really do that. I put a wrinkle finish on the bottom of a trailer a few years back and after a few months it looked awful. It seemed to be a dirt magnet and hard to clean. Maybe the bed liner stuff is different I don't know, I have no experience with it. Just a thought
On another note, I can't tell you how happy I am with that little battery, that thing cranks like a 24 volt system and recharges faster than anything I have ever had.
Ken