I've tried a few things. Almost bought a TR3 rake. Glad I didn't now.
Best solution I've found is to run the disc over the ground a few passes, run a cultipacker over it a few passes (breaks up clods) and then drag it with a land plane grading scraper.
I just made a drag out of a RR Crosstie and some chain link fence (got scraps free from a fencing company). I've not had much luck with the drag as it bounces severely and so I have to go slow.
I also tried a chain harrow from Tractor Supply. Almost worthless.
Though it is a lot of work, disc, cultipacker and LPGS has worked best for me. FYI, I pull the cultipacker behind the disc and that gets two steps done per pass.
Good luck.