Drinking water - haven’t some shipwrecked people survived a long time on the flesh of fish? And nets full of green coconuts might come in handy. Anyway, if you could sail 100 miles a day (and it’s possible to sail 200) you could cross 2000 miles of ocean in three weeks. The Polynesians had some massive canoes, room for lots of coconuts. Finding the dots in the ocean is a whole other problem.
See the book The Last Navigator for some info on how the Polynesians did it.
The Chumash plank canoe, or tomolo, held up to a dozen people and may hold a clue to pre-Columbian contact between Polynesia and the New World. (Photo courtesy Santa Barbara Museum of Natural History.)
"Scholars swim in choppy waters Did Polynesians visit Southern California many centuries ago? The evidence some fishhooks, a boat design, and a few words in common is limited. But to some those clues are tantalizing, even persuasive."
More info on the Hokuleia experiment.