i will add that, if you pick your seasteading location well it will probably work out fine
the current estimation of the likely pole shift will put the north pole in the gulf of mexico or somewhere in the carribean, so if you can visualise how the water will rush in the direction of the jerk, and then wash back, then you might be able to see how there is some places that there isn't a high chance you will end up dashed against the rocks
the rocks, that are most likely to dash you, you can find them by searching for an altitude map of the earth, and i can shortcut your search for the highest points by saying that the west of the rockies and the plateau of mongolia are the two highest, largest areas of land that possibly may not even see seawater wash over them
but if you figure on a 90` jolt, and you pick a position where your craft will first get thrown into deep water, and then come back and the altitude will not be high where it likely returns to, then good
this is precisely how Noah survived too
according to numerous different stories relating to this cataclysm (circa 12000 years ago) in some places you just had to hide in caves or be prepared to be able to get underwater for a few hours when the sun got really bright, so yeah, i don't think anyone has yet done good modelling on what is the likely path of rotation given the solid crust magnetism and the mobile core magnetism getting out of kilter, that's what causes it (the crust slips)
so, yeah
my guess is good locations for doing this are probably the middle of the pacific, some parts of southwest asia, possibly some parts of africa, though low altitude, may be good (i personally think the southern edge of the sahara in the middle might work out ok)
i'm pretty sure that more and more data will accumulate that makes it clear that if you want to do Noah style where to do it