All I've ever experienced is "fore-reaching" in 65kn in a medium-spec Froggy AWB. We popped on the storm-jib and backed it (stormjibs are only any good for passing safety inspections- take my word for it: they are as much use as sliding-doors on a submarine when it comes to maneuvering).
I stuck the helm over and sort of tried to sail against the backed jiblet.
We eventually made the heady speed of 1.6kn at an angle of 135 to the wind (approx), and had bone-breakingingly sore beatings delivered to the fore-quarter of the boat, but it felt a whole lot safer than bare poles with no way on.
For data-transfer rate, nothing beats throwing a computer!