Wiki also tells me that a 60mph wind over a long fetch will generate waves 15m tall with a period of about 15 seconds. I'm sure going up and down 15m every 15 seconds feels like wildly pitching, but it's not a huge angle change (about 5 degrees according to my trig). You'd need quite a beady eye to spot that amount of precession in that environment, especially if the hinge offset worked to reduce it.
Having had the experience of sliding across the ships deck and being brought to a sudden stop at the edge of the deck by the tie down that the deck crew had not had chance to tension up I can tell you from experience that the tip path plane does not change one iota relative to the ship, if it does you would need a micrometer. Substantial ship experience, as with some other posters here, teetering and fully articulated heads, both the same reaction. First thing on landing if you were SAS equipped was punch it off as it would try to maintain reference to the horizon and you could end up finding out where the blade flapping stops were, or worse.