Covering the burner and using a tray for the charcoal is probably a better idea, because there are times when you don't want charcoal flavoring your food. A good example is jerky. Six hours of charcoal smoke would be excessive. Two hours of smoke and four of dry heat is about right.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk