A WAITER was yesterday acquitted of trafficking in 724 kilograms of herbal cannabis by a High Court jury, which deliberated for 45 minutes. Wong Kam-chan, 30, was earlier found to have no case to answer on a similar charge involving a further 486 kg of the drug. Senior Crown Counsel Christina Ma had called evidence that police had seen three men moving canvas bags from a boat moored in Aberdeen harbour on to a lorry on July 19, 1992. The lorry was followed to the Aberdeen Marina Club car park loading area. Police found 724 kg of herbal cannabis packed into canvas bags inside the van and arrested the driver, Man Yue-tao. Mr Wong and another man were arrested as they walked towards the car park. Under caution both admitted helping to load the bags, but denied knowing what was inside. Mr Wong's defence was that he believed the bags were packed with cigarettes.