Ah, S. We nearly had a disaster a number of years back with parents rushing to get me to help. A bonfire got a little out of hand and started tracking to a field of golden wheat. We don't bonfire there when things are dry anymore....

Weedwands are quite controllable though and Pip's main usage is to burn weeds out of areas were weeds are coming up through paving slabs, pea gravel and the bricks in the old pigsties.