Living in the extensive west, I can't remember that last time I took an offhand shot at anything. Sitting, kneeling, standing with a rest, or prone. I near always have a bipod, pack frame, or walking stick that I'll use for support.
I don't really think it matters where you live. However, when I lived due south from you which might also be considered "extensive west" as well, I shot a lot in the offhand position because I didn't like laying down in the sticker bushes and if I did, couldn't see over the sagebrush anyways...
