Reuters: BP Plc CEO Tony Hayward watched a yacht race off the English coast on Saturday, sparking new controversy in the United States as his company struggles to plug its huge Gulf of Mexico oil leak. Sheila Williams, a spokeswoman for the British energy giant, said Hayward was spending time with his teenage son at the Isle of Wight boat race after devoting most of the past two months to the oil spill away from his family. Hayward was lambasted by angry U.S. lawmakers at a …