A lot of people use an old tire on a chain.That is an idea I need to try. I have 4 culverts that go under the road. On the outlet side is a flat shelf before it drops off into the woods. The ditch across the flat gets clogged with clay/silt and the only tool I have used is a spade. Hard work for me. Maybe I can make your idea work. Thanks for posting it !!
gg