Do you think maybe notch and noked are regional terms. Ugilick and I are in the same area, and we prefer notched. Plus, seeing as I have never heard the word nocked before, I've only seen it in a book once or twice (I can't remember how many times they used it, it was in the same book), that might factor into it. I know 3J lives in Canada, and I live in Alabama, so it could be a north-south difference. I have no idea where the others who support nocked live so I can't vouch for that part.
That may sound stupid, but its just a theory I have. Like the whole biscuits-cookies thing.