Captain's Ribs:
Set slabs over white coals and wood chips bone side down with the lid down and decent draft pulling. Test the meat at around 10 minutes and see if it's cooking on the bone yet.if it is, time to flip onto the meat side for a few more minutes over an uncovered grill.
Now is the sauce part, two ways to go about it, I use Maull's Smokey. If I'm cooking them just for a couple of people, I'll lay on some sauce at the end and let it caramelize over the fire for a couple minutes each side.
If I'm doing it for a big crew though, once did em for 150 people, then I get several cases of sauce to put in big vats and the slabs come off the fire about 2/3rds done, the racks get split into long and short end then 3/4 sliced between the ribs. Once prepped for the plate they go in the vat of simmering sauce to finish cooking and absorb some sauce spices.