The high performance coaches at both the Glenora (Wang Wen) and the Derrick (Jon Vandervet) will usually string for you if you play their respective private clubs. If i rmemeber correctly, both are $20 stringing (bg-65 included) and can take anywhere from 1 day to 2 weeks. My best advice? Play at some clubs and get to know people who string. I have 2 friends who own stringing machines and they just string for themselves and their friends.
