I called two dozen rental places, from Buda to Georgetown, looking to rent a mini-trencher. No one has them. Looking to dig 1" wide by 6" deep trench. These mini-trenchers were common as dirt twenty years ago. Used for "invisible" dog fence and low voltage lighting wire. What happened? Where are they? I have ~1000'+ of trench to dig. Don't want to do it manually. Any suggestions? Thanks.