I've been toying with doing something similar but using a 5 gallon bucket at the base of the UDS.
My idea is that then I may be able to achieve lower temps for extended periods for making stuff like Jerky, beef sticks and items like that.
I have the bucket and lid just need some time to make the mods.
Any thoughts would be appreciated.
2004 Weber Performer GREEN
Orange Super-Duper Fast
'08 Weber Genesis Gasser
SJG Tamale Pot Mini Smoker (SJG was a rescue)
and a Pyro FIL