Well...
I've made one of these....
it does work.
but thank to the USD threads I've figured out a lot of things that need to be done in order for it to work.
So for those of you who have won a JACK Barrel or bought one...here's what I would do.
I would somehow line the bottom with a sheet of thick steal. (highly suggest round walls up about 24 inches in height to protect that bottom wood) I used a round concrete patio block that over time just broke and I needed to buy another one. (plus the patio block was heavy and made it even harder to move.
I would put wheels on the bottom.
I would make a UDS basket.
I would scrap the water pan idea...this only made my charcoal needed to be added to more often and just became a PITA as I couldn't easily refill my bottom pan.
I had 4 vent holes the bottom with just a round piece of sheet metal to slide over the holes to open or close.
I plugged the bunghole with a hunk of wood had carved to match it.
I made just one large hole in the top with a used stack from an other off set smoker I had.
I had a few issues...
I needed to run screws on each of the bands into the wood to hold the bands in place when I cut off the top.
I also had problems after about 2 years of the wood just drying out and creating cracks and warps that left 2 much air leaks and I could no longer control my temps without going insane.
I would suggest some type of sealer on the wood to prevent that from happening but what I really don't know....I know the sun beat it more than my smoking did.
in the short run...it works....in the long run (2+yrs) it didn't for me...
I'm now the proud owner of new issues (uds) and the rusting issues..
POWDERCOATING here i come once I get my "drum down"