Need advice on bustin old sod...Replacing Lawn

[Bear Foot Farm]

I guess the chain link fence part is only for raking smooth after we have it pretty level and "dirt like"?

Yep.
Any type of dragging when there's a lot of residue just tends to pick it up and make inconvenient piles.
If there's still a lot after disking a couple of times, you may have to rake it off and dispose of it.
Hopefully by then most of the dirt will be off the roots

 

[rutwad]

Save time and hook the drag harrow to your disc.

By friend has something he uses to plant his food plots. Not sure what it's called, but I believe it's made by frontier. It's a cultivator, drag, clod buster combo thingy.... It leaves a really smooth finish for planting, but it may be too "fluffy" for hydroseeding.