LOS ANGELES -- The famously fit Gov. Arnold Schwarzenegger, on vacation in Hawaii, helped a struggling swimmer on a boogie board make it safely to the beach, his office said Friday. Schwarzenegger, who has been on a 10-day getaway with his family on Maui, was swimming toward his wife, Maria Shriver, on Wednesday when he noticed a man ''in distress in the water'' clutching a boogie board about 100 yards offshore, said Margita Thompson, the governor's spokeswoman in Sacramento.