Have been searching for this method of plowing for some time on YT. Mostly unsuccessfully - the YT is full of cable plowing videos, but most of them are two-engine system demos. Finally found this method with the movable anchor cart illustrated here. Thank you sir.
I'm not sure Sean. All I know is that it's a very rare piece of machinery especially here in Australia, and when this was filmed back in 2013, we had a group of gentlemen from England come over to see it run and take measurements of it. I believe they were making a replica.
