...Windage forward of the main, mostly from the furled genoa, is enough to keep the bow at about 45 degrees to the wind and waves with the main sheeted tight on the centerline.
This is absolutely right. My previous boat behaved the same, hove-to with just the main, 'cause it had high freeboard forward, and I have spent up to 3 days waiting for favorable winds on the way to the Azores.
The reason I tried this was to keep the bow pointed well forward into the good sized seas with breaking crests, as opposed to beam to, which it will tend to do, hove-to, in higher and higher gusts, if there is even a little jib on the headstay....
The advantage of being hove-to is that the boat creates a slick to windward, and while the seas are confused sometimes breaking all around, it is somewhat smooth in the slick, softening the motion. This is why it is important to keep forward motion (foreaching) to a minimum, it is impossible to stop it at all.