Here in Ireland we like to just burn shit over charcoal. Here's a bit of info to help do it right:
http://www.youtube.com/watch?v=ccqOVmsybO4&list=PLrEnWoR732-DZV1Jc8bUpVTF_HTPbywpE&feature=share&index=12
Intresing but too much info. and that fella looks too much like Jim Carry . Would recommend just getting something fatty, preferably from a pig. Lash it on low heat on a covered bbq with wood chips for several hours.....mmmmmmm. Cooked a pork shoulder last weekend on the bbq - first of the season, tasty stuff,
How low?
Left hand burner on low, pork in a tray at other end for about 6 hours.
Best to raise the tray/pork if possible - like on the warming rack if you have one else a couple of bricks.
I like the video clip :) It has giving me a better understanding of BBQ that I did not know.