There was certainly contact between the polynesians and native americans. The Chumash got their tomolo design after contact with ancient polynesians who sailed

There was certainly contact between the polynesians and native americans. The Chumash got their tomolo design after contact with ancient polynesians who sailed to the channel islands. Before that contact they used reed based boats to travel between the channel islands, after that contact and the adoption of polynesian style sewn boats they were able to radically increase the scale of their commercial activities by being able to transport far more goods than with the older boat design.