POLO on Governors Island would have been a bust on Saturday without some help from a brave ferry captain. Many fans and half of the horses arrived earlier than the scheduled noon start time, but a rain storm halted boat service, stranding tardy guests and some of Nacho Figueras‘ horses in Manhattan. Veuve Clicquot reps persuaded the Governors Island Preservation & Education Corp. to let one more ferry over, and the chukkas went on.