[QUOTE 2415092, member: 9609"]Any fire experts here (addictfreak) (I don't seem to be able to tag the name with the @ symbol)
If I covered the fence with a couple of sheets of plasterboard, packed around the tree with coal - would the fence survive.?[/quote]
That will depend on how much heat it produces, you would need to keep an eye on throughout and watch for the fence starting to pyrolyse. If the ground, stump or coal is in anyway damp it could give off an awful lot of smoke, which will annoy the neighbours no end!
If you go for that option, I would keep a good garden hose handy just in case. Put plenty time aside it's likely to take a couple of days if it works!
Chainsaw would be my choice, small pieces at a time and watch for kickbacks from stones or catching the ground. Make sure you have the right PPE.