Matthew
Touchdown! Greaser!
I've seen a couple guys use these things:
http://www.lacajachina.com/
They call them "Cuban pig roasters". From what I've seen of them, they work very well. Similar to what @flyingron describes, you put the coals down on a rack and spread them out evenly, then the pig rack goes directly over it. Close the lid and let her go.
http://www.lacajachina.com/
They call them "Cuban pig roasters". From what I've seen of them, they work very well. Similar to what @flyingron describes, you put the coals down on a rack and spread them out evenly, then the pig rack goes directly over it. Close the lid and let her go.

