I've been barbecuing for a little while on an offset box rig (Brinkmann) and have had pretty good luck. However I've been reading around and see that there are varying opinions on how to add fuel to the fire. I've been starting with lump charcoal and adding soaked hickory chunks or sticks. Periodically I refresh with more (cold) lump charcoal and/or wet sticks. I've heard some say that you should never feed your fire with anything but already glowing coals, as cold charcoal or wood will give off creosote, etc at the beginning of their combustion leading to bitter BBQ.
Any thoughts on this matter? Have as anyone found it conclusively worthwhile to have a separate "feeder" fire when BBQ'ing over a long period (i.e. that 16 hour brisket, etc).