http://www.youtube.com/watch?v=8fdiO9WudLM&feature=plcp
I just loaded up -
Alan Orr Wing Chun Questions 6 -Turning in Chi Sao
This clips shows some of the different Principles in turning in the Chu Sau Lei Wing Chun system.
Bridging the understanding of Chi Sao (being a drill - live or not) to sparring / fighting application.