By Chutima Sidasathian and Alan Morison PHUKET: At least two boatloads of Rohingya are believed to be off the coast near Phuket today, with Thai Navy patrol vessels looking to ''help on'' the would-be refugees in a game of cat and mouse. The ricketty Rohingya vessels, with more than 70 men and boys on board each, departed from Bangladesh on October 24 and October 25, sources say, probably aiming to reach Malaysia. Contacts in Thailand have today confirmed the presence of one vessel close to the Andaman coast, not far off Phang Nga or Phuket, with the second vessel reported to be further out to sea. A sighting yesterday put the second vessel off Koh Ka, near the better-known Surin Island, a popular destination for holidaymaking divers from Europe and Australia. One boatload of would-be refugees landed on the vacation island of Phuket earlier this year, looking for food and water after a tortuous voyage south for sanctuary from the constant persecution expe