Bill,
First of all, I only have a limited amount of experience with regards to this subject. I agree with Rex to keep the topsoil damp to hold it in place. Is this guy spreading the seed with a 3 pt PTO broadcaster? In my past experience after the seed was broadcast, I dragged a piece of cattle panel behind the 4 wheeler to lightly cover the seed. I would again wet down the area after the seed was covered and continue keeping it moist if the winds prevail. Hopefully, the winds will lay down and the seed will germinate and sprout. Good luck.
Charlie

...when in doubt...set the hook...