How do you guys control the temp in your smoker? Does anyone have an automatic type thing with a fan? I'm considering buying/building something. I have no problems with the UDS when I'm smoking at 225F, but when I do fish I go from ~110F to 145F to 175F over the course of the smoke, and it takes a bunch of fiddling that is somewhat weather dependent and kind of a pain in the butt.
I know you can buy pre-made units - any recommendations?
For DIY, I'm thinking a a ranco type controller that measures at higher temps and is wired to power on when the temp drops. Connect a computer fan to that, mount the fan in a pipe that can attach to the pipe nipples on the bottom of the UDS, and Bob's your uncle.