I built the basic unit as a hard pan ripper for my garden several years ago. At the time, I thought it might make a pretty good cable plow as well, but had no immediate need so didn't add that part.
Need to bury about 80 feet of wire for the daughter to run power to the chicken coop.
<Electrical Safety Nazis do not read the next part...>
The feed tube is 2 inch EMT, the plan is to run 1 inch PVC water pipe through it as "conduit" . When the conduit is in, I'll suck a mouse-and-string through it to pull the wire in. The only load will be a heated water bucket for the birds and maybe a 40 watt bulb for Winter chores.
</Nazis>
I used the Zeny plasma cutter to cut a piece of 3" square tubing on the diagonal to make a vee, welded the vee to the spine of the ripper and then welded the sweep 90 into the vee. (Plasma cutter cut that 1/4" tubing without a hiccup! Dry air makes a HUGE difference!) A 30 foot test run through my old garden didn't break any welds, so I guess the next step is to try it at the dottir's place while actually feeding pipe through it. I'll have the grandson guide the pipe to prevent chafing or jams.
Do think I'll scrounge up another piece of 2 inch pipe and extend the top so I can run a little deeper and not worry about dirt getting into the top of the feed.