My tenant, Randy built this fire pit cooking rack. He's in the habit of having a camp fire, whenever friends visit and it's legal to burn outside. We've had a camp fire ban for several months, due to drought conditions.
Once his wood burns down to coals, food is placed on the racks. They are set at different heights and they swivel. The hillside can be windy. The sheet metal helps. This is not very efficient, but there's no end to scrap wood on Vancouver Island. It gets burnt, whether food is cooked or not.
The temperature is easy to control and results have been delicious.