Rippers are kind of crude for that application. You can rent a
walk-behind Ditch-Witch.
http://www.ditchwitch.com/dwcom/Category/CategoryView/6
wrote:
or whatever.I saw a commercial on tv and a guy had a metal bar mounted
on the back of his riding lawn mower/little yard tractor.He was driving
foward and the bar was digging a trench.That would come in handy for
digging a trench for coax cable for radio antennas.A bar could be
fastened to a car or pickup truck and do the same thing.Just put it in
gear and go.
cuhulin