ILOILO CITY—On the eve of the 50th Iloilo-Guimaras Paraw Regatta Festival on March 18, artists were hard at work on the colorful sails that would power the native double-outrigger boats in competition. The Philippines’ biggest traditional boat sailing event—the oldest in Asia—returned after a three-year hiatus imposed by the Covid-19 pandemic. The 30-kilometer race on...