In reply to JTM:
Are Weber those ones which look like bouys?
From watching my dad barbacue on ours', and helping my brother barbacue one time when he was away, you need to light it before you want to start to cook so the charcoal goes grey and hot and kind of dormant, rather than smoking and flaming, and if you can find the right height for the grill you seem to just be able to put the food on and keep an eye on it and turn it over occasonally to stop it burning untill it's cooked.
On summer evenings they're nice because as it gets colder you can pull chairs around them and chat and be communal, and put bits of wood on and poke them. You can't do that with gas. Guess that's either a selling point or it isn't. (
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My dad cut two bits of metal to put across the top of our bouy shaped barbacue by the way to put the grills on, so the food is high enough above the charcoal.