What would you do, more pondering on the heat issue.

As long as you don't point the exhaust into the wind.

 

i was more interested as to how the gas reacts to being used on the move, thought you couldnt store and use gas bottles on their side because the gas could be let out as a liquid and i assumed when moving the liquid would slosh around causing the same issues

 

I'm (eventually) going to link my propex into the ducts up front via a natty y piece with a gate to direct the hot air down either branch. (front or back). Considering fitting an inline bilge fan to handle demist. I think you can p/u the y pieces from air con suppliers. Reckon by the time I get it sorted it'll be warm again!
Cheers
S

 

Just be aware that many in line bilge fans have plastic impellers only designed for shifting cold air as would normaly be found in a bilge compartment.