I personally never occupy the lane. I always ride to the right "tire track". Occupying the lane seems like it is safer but I do not believe that is so.
If a person can't see you or is trying to hit you, riding the middle of the lane increases your odds of getting hit. And if you are concerned about irritating motorists, riding the middle of the lane below the posted speed limit just about guarantees you will irritate them.

Yes, you may get buzzed more often riding in the right but I can handle getting buzzed, getting hit not so much.