Outside the box ideas for tank covers and tongue storage

robsouth wrote:
Not sure a "sealed box" for LP tanks is a good idea. Check further on it before proceeding.

This is true, when propane tanks get hot especially when they are full the valve is designed to vent a little pressure off. Propane tanks in the same box as battery's isn't a good idea also since a spark from the battery's could cause a problem when the propane takes release a little pressure.