I used the Tractor Supply Subsoiler to bury an electric line for pool service. Here all electric needs to be 18" deep. I ran 2 passes with it behind my Ford 2n and got the 18" deep, however we did have to dig about 1/2 the dirt out by hand. Our soil is a mix of dirt, clay, with baseball + sized stones, not to mention roots from oaks, maples, etc all on top of bedrock. Found a few roots that stopped the Ford dead, but with a pick axe we cut through them, I'm sure if you've got more than 13hp you might be able to cut them with the subsoiler. If you are running the conduits, I would go with the Agri-supply pipe layer kit, seems like as long as you can feed the piping in, it would work great. I have used it behind my JD2155 which is higher HP than the Subsoiler is rated for, but I went slow and didn't force it, worked great, no damage. I did 3 passes there for a couple 4" downspout lines. Since I am on bedrock so I could only go 15-16" for most of it. Good Luck