Sabre,
I might add something you probably already know. Starting the fire with coke will greatly reduce the amount of smoke. Sure, there will be some raw coal in there, and it will smoke like heck, but not as bad as starting with all raw coal.
Once the fire is burning well I try to add a little coal at a time to the outside of the firepot. I push the old material towards the center of the fire and add the coal along the edge of the firepot. Try not to wait until the center of your fire is all burned down too much. It's better to add a little at a time than wait until your out of the hot stuff.
If I do get carried away and deplete "The Good Stuff" I add a bunch of material to the outside of the pot and pack everything together well. I then poke a hole down into the center to direct the air flow straight up, give it a bunch of air, and take a break while the coal cokes down.
Hope this helps someone,
Lefty