I installed a "stay awhile" fitting right off the tank on the right side. It comes with a 12' hose that I toss under the vehicle to connect to stove. We fulltime so having the ability to hook to an external large tank sure comes in handy as well. Don't ask how I know that you show add the extension hose to your pre-trip check list!
I did notice while doing maintenance in the water compartment that there appears to be a place where you could tag another fitting onto the existing gas piping system. I believe this would provide low pressure gas as it is past the onboard regulator.