I've been buzzed lots of times on lots of different roads. I just stay as far to the right as is safe. I look behind me all the time. I make sure the driver behind me sees me turn around, and I use that to clue them in that I'll need to come out farther to avoid an upcoming hazard or something. I will take the lane when necessary, and I check behind me even more.

I think mirrors provide a false sense of security. I'm all in favor of just learning how to look behind you and hold a line. Use your ears and your eyes.

Rural roads are my favorite riding terrain, even on some of the higher speed ones.