I have posted this video link several times, but did not get much feedback. This process of pulling two mains was originally developed for the Ektelon Model D stringing machine to compensate for it's short tension arm. I now also use this method on an Ektelon Model H (which has the long tension arm) because the result is a much more consistent tension on the center main strings. Pulling two mains from the top of the racquet eliminates the friction loss of pulling one main string at a time across the racquet frame on the throat end and also eliminates several clamping steps. The guitar "tuning" step makes it easy to balance the tension and does not add any time since several clamping steps are eliminated. All of this is demonstrated in the video. Not sure what anyone else thinks, but I would not string a racquet without using this technique.