on my stickburner (horizontal offset), i shoot for having a fully burning woodfire at all times...no smoldering! This is the cleanest burning fire, releasing the most combustion gases favorable to smoke ring formation and imho best smoke flavor (not oversmoked, creosote laden, bitter flavor).
To do this, i keep all intake and exhaust dampers wide open. In fact, unless it's a really windy day, i usually burn with my firebox door wide open too. That ensures that the fire gets all the oxygen that it needs. Since there is no regulating how the fire burns with this method, the only other way to control temps in the cooker is to manage the size of the fire with fuel. Need higher temps? Then put more wood on. But generally keep a small but hot and fully burning fire going at all times. Add small splits when temperature starts to dip to maintain the fire.