I have done like most of you, used the same type drags. Now I use 5-7 tires wire together in a pyramid. Drags great, doesn't over bury and flexes on anything like trees I may hit, leaves the ground smooth almost like a cultipaker went over it.
I don't think you can beat cattle panels in clay type soil that likes to clump though, those panels are great for breaking down clods.
“Never be afraid to try something new, or diy. Remember, amateurs built the Ark, professionals built the Titanic”
Friends don't let Friends drink and post.......
The first 5 day's after the weekend, are the hardest....