ASIAN Games silver medallists Sam Wong Tak-sum and Lee Lai-shan completed a double for the territory by winning the men's and women's titles at the Mobil Hong Kong Open at Kwun Yam Wan off Cheung Chau yesterday. Wong, who scored four wins out of eight races on the previous three days, needed only a top-three finish yesterday to secure the title and he came second to Japan's Ikuo Inoue in both races. 'This is the best season for windsurfing in Cheung Chau,' said the four-time Hong Kong national champion. 'The wind is blowing and the competition was at a high speed, it was fun for the sailors and exciting for the spectators.' Inoue took second place in the men's division by virtue of his two victories yesterday, pushing China's Yin Guangjun back to third. Former women's world champion Lee Lai-shan completed the 10 races with an impressive record of six wins and four second placings after splitting yesterday's races with Dutch sailor Dorien de Vries. Lee had wrapped up the title after eight races and could have sat on the beach waiting to collect her prizes, but she choose to compete. De Vries, the Olympic bronze medallist, finished second ahead of China's Huang Ying. Said Lee: 'It's not every day I get to race against sailors of Dorien's calibre and with conditions perfect for sailing, I didn't want to be sitting idle on the beach. 'This was definitely one of the best championships I've had because the wind was blowing on all four days and we finished the full programme without any interruption.' Ken Wong Hop-hi captured the men's international raceboard class with two more victories yesterday to give him seven wins for the series. Tang Luen-chun was second ahead of heavyweight junior Duncan Lai. The women's championship went to Olivia Chan with Mirana Lau and Angie Cheung filling the minor placings.