Thank you very much John, more or less that was the idea I had. Buy an old plow and try to adapt it but as you say the problem is that it remains almost on the feet. Here the terrain is not very hard but there is a drought, on the contrary, in the tests I did, what happens is that the wheels are skidding. I hope you understand what I write by using the translator since unfortunately my English is very basic. He left some photos of the idea and what suits him.