So OP still hasn't returned that backhoe to the rental house and got a proper grading machine like a CTL?
Still reading all the posts.
I'm 200 miles from the rental yard, and my employer(G.C.) is covering the cost. I'd rather keep it around for a bit then send it back.
The past 2 weekends I've been digging to put in my UG utilities. Power conduits are in, and I have 2 yard hydrants that flow water. The sewer was going to be an 60' run, until I dug to it and found it almost 6' down where it enters the main. Now I'm going to run it another 100' to pick up an outbuilding I have plans for. Ran out of pipe and sand last weekend because I wasn't expecting to make that change.
Between digging and backfilling I keep playing with this dirt. Managing the rocks has been a PITA. The loader has a clamshell, and I discovered opening that up and running the blade vertical did the best job of moving the rocks without taking a bunch of material with it. After that I could actually make passes that looked somewhat decent. Once these trenches are done I'll spend more time smoothing this out.
I'm trying everything you guys have suggested, and will keep doing so.