I used a middle buster modified similar to Kenny's. I folded the rops bar halfway and pinned in place. Using a few C-clamps,a couple of scrape 2"-4"'s drilled to allow a piece of 1" black pipe.
(Axle to hold a coil of wire for spooling)
Mount wire spool to black pipe axle, above the middle buster. (Wire to spool freely)Feed wire thru guide PVC tube, worm drive clamped the rear side of Middle Buster tooth shack. Tie the wire to stake into a hand dug hole, at the starting location. Start the Middle Buster from the hand dug start hole. Lower middle buster slowly to depth while moving forward SLOWLY.
Avoid rocks, tree roots, and any other known underground obstacles. No sharp turns!
Operating a Middle Buster, while spooling cable, in reverse is not recommended!
The above instruction will allow for a one man operation. A helper,working from the side, can feed the wire if you cannot mount the wire spool to the tractor. Be very careful!
Good luck!