I got so excited that I did not want to wait till next year to finish the whole area. Now I have to. Appreciate any input. There might be a bigger problem that is not getting addressed if you do not know why you have bare areas. Thx Sean for the replies.
Bare areas are close to driveway with very compacted soil.
I found plugging filled in those areas in 2-3 months during spring and summer this year, after preparing the soil well down to a foot deep. I got so excited that I did not want to wait till next year to finish the whole area. Now I have to.