[tucosan]

Most of what the device is 'supposed' to be doing is quite clear from watching the video. But leaving the wind to decide which path to take and clear in a given environment won't allow the people in affected areas to solve the problem methodically. At least the iteration of the device presented on the website and in the video does not solve how it can be deliberately moved across a certain area, hauled back in and moved across a neighboring strip of affected land.

This looks more like an art project to me at the moment. I be believe a device fashioned in a similar vein could actually be quite helpful.