I smoked some cheese on mine a couple of years ago.
I used only 2-3 unlit briquettes, 1 chunk of wood and 1 lit briquette to keep the temps below 100. It was a hot summer day and even with that I was able to keep the temps down significantly.
I think it all just depends on how much coals you're burning at one time.
Big JT's Smokin' BBQ Competition Team
"The path was worn and slippery. My foot slipped from underneath me, knocking the other out of the way, but I recovered and said to myself, 'It's a slip and not a fall.'"