oh man should have left skin on, holds the juices.
look up How to Pit Barbecue | eHow or Pit Cooking - How to cook in a hole in the ground for get the foil i'd go with banana leaves
love the hawaiian ways of doing imu
would help to know what state your in?
There are 2 foam shops that can cut in my state, little pricey. then on another forum, a member ended up doing mine for a small fee. Extremely impressed.