We also prefer cooking outside. Rather than running a hose from the scamp's tank (our preferred cooking spot isn't always close) we carry a small one gallon propane tank that is light
and easy to move to the cooking area. It readily hooks up to a coleman stove or small propane grill. It can be filled at any location that fills the 20 lb tanks. Here is a photo showing it mounted on the scamp
hitch adjacent to the battery
and behind the main tank. Easy on/off with two turnbuckles.
Not what you asked I know, but perhaps a useful alternative.