FILE - In this June 26, 2017, file photo, Emirates Team New Zealand helmsman Peter Burling, left, and teammate Blair Tuke cross the boat during the ninth race in America's Cup sailing competition against Oracle Team USA in Hamilton, Bermuda. As they hit what could be the prime of their careers, Burling, 30, and Tuke, 31, are thinking about more than just their next victory. Sure, they're focusing in on trying to win another gold medal in the high-performance 49er skiff in the Tokyo Olympics starting later this month. They also realize that as the victories pile up, they're in a unique position to speak out about protecting the planet's oceans. (AP Photo/Gregory Bull, File)

FILE - In this Aug. 15, 2016, file photo, New Zealand's Peter Burling, left, and Blair Tuke compete during their 49er Men race at the Summer Olympics in Rio de Janeiro. As they hit what could be the prime of their careers, Burling, 30, and Tuke, 31, are thinking about more than just their next victory. Sure, they're focusing in on trying to win another gold medal in the high-performance 49er skiff in the Tokyo Olympics starting later this month. They also realize that as the victories pile up, they're in a unique position to speak out about protecting the planet's oceans. (AP Photo/Gregorio Borgia, File)

FILE - In this Aug. 18, 2016, file photo, New Zealand's Peter Burling, left, and Blair Tuke, center, celebrate their 49er FX men gold medal at the Summer Olympics in Rio de Janeiro. As they hit what could be the prime of their careers, Burling, 30, and Tuke, 31, are thinking about more than just their next victory. Sure, they're focusing in on trying to win another gold medal in the high-performance 49er skiff in the Tokyo Olympics starting later this month. They also realize that as the victories pile up, they're in a unique position to speak out about protecting the planet's oceans. (AP Photo/Bernat Armangue, File)