i want to make up and fit a temperature control device to my uds. i am not working at the moment so funds are tight.it was my birthday the other day and i was bought a maverick ET-732 thermometer unit as a present and very nice it is too! but i want to fit a temperature control device (home made) to my uds .i need to know what cfm fan do i need to raise the temps but not so strong as to blow ash on my meat and where do i direct the air flow, straight at the coals or below the basket?. i know ideally i will need a pid temp controller but i do not have the money for one at the moment, so will i be able to use a traditional oven thermostat to switch the fan on and off i also understand that it would not be as accurate as a digital but a thermostat should be able to keep the temps within acceptable ranges and i have one already that i was going to use in an electric smoker i intended to build but never go around to doing