I think that one of the Brothers from Canada has done the insulation bit by using some kind of blanket to wrap it with. I can't remember who it was, though (old fart mod).
CBJ # 22569
KCBS BoD Judges' Advocate
Possibly the only judge ever to get an award from a bunch of cooks
UDS 075 UCB WSM and a bunch of other stuff.
The above post is only my opinion - mine & mine alone.