Peddler
Knows what a fatty is.
You shouldn't need too much distance from the barrel as it doesn't really get hot enough and any air gap improves that. Here in Texas the tank may reach 130* to 140* sitting in the sun on the deck, BTW with no issues. I would say mount it under the wire basket on the rt side and if you want put a piece of metal between the tank and barrel as a deflector.