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Speaking theoretically, I don't know. As mentioned above the water flow over the keel and rudder would be the same if you were sailing along at X knots (kind of like being in a wind tunnel). The finger is SOG (i.e. - keeping you in one place relative to the ground). But the water is moving past your boat at X knots...not SOG. So the foils and forces should work.
That said, I could also see what you're saying about the bow wanting to fall off...like a kayak in a river (which I actually have experienced).
So are there different dynamics at work here?