Originally Posted by deepfryerdan
How do you add more charcoal if the need be?
You don't. Just fill the basket with enough charcoal for the length of the cook, whether they're 5 hour short smokes or up to 20 hours burn time. You'll also bury several large chunks of smoke wood mixed in with the unlit charcoal. Only several (a dozen) fully lit briquettes are placed on top of the basket of unlit coals to start the long, slow, low temperature burn.
In most cases if you start out with enough charcoal you'll end up with a pile of unburned, left over charcoal at the bottom of the basket the next morning after closing off all the vents and snuffing out the coals.
There's really no reason to put an access door on the side of these vertical smokers. They only create more air leaks.