heres my invention. i would make a smoker with two hoppers. one for hardwood fuel like oak to burn and bring the smoker up to temp, then at some degree of height above the fire pot i would have a smoke pot where flavor wood would be augered down into on a regular basis based on average smoldering time as per the temp of the pot. this would give regulated heat with consistant smoke at any temperature.
Better Days Barbeque
22" Weber Kettle