I generally take the smallest roads I can find. Fortunately, these roads tend to be quite scenic with very few cars. If there's someone stuck behind me (i.e. no room to pass), I'll just pull over and let them by. It's a win-win, IFAIAC. They get to pass me with minimal fuss, and I get to enjoy the scenery again without being disturbed by a car. The roads don't get so bad here that it makes much difference either way. I suppose if the small roads were truly terrible, I'd have to rethink my position.