I decided to give this a try this weekend.
I bought a new unused paint can, punched some holes in the bottom and around the lower part of the sides. Punched a few holes along the top and strung some baling wire though to hang the can from. put in exactly 15 charcoal briquets, lit them and waited for them to turn white. Then I placed the seasoned,foil wrapped chicken into the top of the can wings down.
3 hours later.......threw away a raw chicken.