I see a lot of unnecessary smart mouth remarks here. One thing I would do to shut them up is: 1st - produce a "video redo" where its obvious that the field is "natural" to show what it can really do
(that should have been done in the first place)
& it shouldn't be to hard to find a farmer who'd let you. 2nd - mount a "GoPro" camera on the top/sides/back/front of both units so your potential buyer$ and distributors, can see how they actually work. JMO...You're welcome.
Com: Carlos moncoda : hello, you can apply this technology to the cleaning of wooden storage areas, the idea is not to remove sand, just collect bark I want to see the feasibility of applying this in the wood business
Com: Brian : Use to pick rocks on the farm,nothing worse than looking at a new field that's 40 acres, and those rock pickers take for ever because they are small!
Com: Explorer : My first job was picking rocks on a potato farm. 1,800 acres of hell and I walked every last inch of it every spring for 8 years.