In days gone by hedgerows were trimmed by gangs of country boys with mattocks shears and a host of other implements to do a good job of of cutting back excessive growth. The finished job was neat and tidy and the cuttings were burned on site or removed.
Enter the flail.The flail does the job of trimming by simply bashing the trees/bushes to smithereens. Leaving an ugly mess that is dangerous to wildlife and domesticated pets.
A flail consists of great chunks of steel spun round at a rapid rate of knots attached to an arm on a tractor.
The end result is this . . . . . progress is what its called most of us would probably know it as vandalism.