I tried this approach last year. After tilling the field looked great. Using my UTV I mounted a broadcast spreader, drove around slinging seed, and then using a drag harrow to stir it all up. Looked great until the first rain. The wheel tracks from running my UTV all over it showed thru and ultimately didn't sprout the grass seed as well as the places not driven over.
Trouble with my seed slinger and my drag harrow is I can't turn it off, stop, and back up when in use. I have to keep driving forward and use my old tire marks as a guide for where to run in ever tightening turns until I just either give up or go over certain areas multiple times in order to line up to hit some spots only once.
Not happy with the results and at a loss how to remedy. If you find a solution I hope you share it!