GratefulB,
First we build a small pit by raking out a 2 to 3 inch deep pit by 30 inches or more, depending on the size of the rack. We then build a fire with any kind of smoking wood. We use red or white Bay wood as it is a local available smoking wood. We use old commercial refrigerator or freezer racks - one that when placed on bricks or half blocks will cover the coals. I have seen heavy duty expanded metal used. Then we soak in water three burlap bags - more if needed.
Take one or two bushels of oysters that have been washed with fresh water and pile them up on the rack directly over the coals (note: not fire, but coals) then cover the oyster pile with the burlap bags. We are now at the beer drinking stage waiting for the oysters to start opening up. The oysters are done and smoked when they first open. Too long on the fire will shrink the oyster and make it tough. It requires an operator that will turn the oysters over as needed using a shovel. Kitchen tongs are used to remove the now top layer of opened oysters to the plates - placing the burlap back as needed. The steam and smoke will give the oysters all the flavor they need, but we do serve lemon wedges and horseradish cocktail sauce. We just use paper plates, metal forks and plenty of paper towels to hold the hot oyster shells.
One of our sons in another state bought a bag of oysters and performed the same process with a new $300.00 gas BBQ. A few months later he had to replace the insides. Salt water and gas BBQs don't mix. However! He stated the oysters tasted just a good as the Cedar Key method.
I have smoked oysters in the Cookshack 55, both opened and un-opened. They did not turn out as well as the Cedar Key method - smoking a smaller amount and too much trouble. Clams in the 1 to 1 ½ inch size are grown here commercially and clams are sometimes mixed in with the oysters.
Smokemullet