I guess you would have to try it Bob first to find out for your self. But I have done this for years and it has worked wonderfully for me.
My method would work very good if your
dry camping. For me it's works. Its tried and true. And really saves on the
propane if your boon docking.
What works for me may not work for sombody else. But if sombody wanted somthing simple and there was not a hot water installed before I think old school hot water heater is the way to go. Its simple and very few parts to wear out. And its a lot cheaper.
I have done this up in the North West where is gets very cool to cold at night and its always done me good.
The only draw back it in extream side wind blows out the pilot, but I beleive they make a deflection sheild for the vents on the doors if memory serves me right.
But 99.9 precent of the time the pilot has stayed lit.