So, the general consesus is that the Copper-Tube-As-Heatsink won't work? I have no issues installing a fan, I've got plenty laying around.
I had also toyed with the idea of building an insulated box into part of the collar to contain beer lines. Along the same idea as the cooling boxes made from dorm fridges.
MrShake - Top Hat Brewery and Tapworks
Owner of BrewTroller