Well i did it yesterday. It was, 'okay'. I let it cook far too much. My goal was to let it cook for about 4 hours at between 200*F -250*F and take it out when the roast reached 135-140*F. Well, I started my coal fire and everything 'started' out well. My fire was holding steady at 200* for quite a while. So I decided to take the girls for a swim with my parents. When I got back, the temperature inside the smoker was down to 150*, so I started some more coals up, tossed them inside the coal-pan, and then couldn't really keep the temperature further down than 300*
. It ended up cooking too fast, and the meat's temperature came out at 155*. What I need to invest in is a thermometer which I can leave in the meat without having to open the hood of the smoker.