Testing ancient Paleolithic migration with a replica canoe

"How did Paleolithic people arrive at such remote islands as Okinawa? What tools and strategies did they use?"

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[Sheep Disorder]

In the case of islands only two days' paddling apart, that's not so hard. I mean, beyond just hoping that there might be, or noticing birds flying back to roost in the evening going in an unexpected direction, there's always going to be cases of "fisherman gets blown out to sea unexpectedly, catches sight of distant land, returns home after the wind dies down."
Note that shallow water offers a lot of opportunities for fishing, so there's a pretty strong incentive to go looking for islands.

Padding is very feasible if their simulation study is sufficient correct. The old current appears (Fig 2) to be in the 0.8 to 1.2 m/s range whereas the modern models are over 1.2 m/s. So these researchers would have easily done it given that they were able to do it under modern conditions.

In addition to the birds, they should have see the clouds that appear over island(s) so they would know something was there.