Heh... You are reaching the limits of our available science (your camera) I looked up your model and it shoots 30 frames a second max, which means 3 frames for .100. You can actually see it in the timecode I inserted in the slowmo... it goes up by 30 milliseconds per frame.
You are going so fast that your pull and release are almost always between frames. This means a little bit of guesswork on my part, which I am probably very close... but have to admit, its not 100% precise. I can still give you decent timing info, but I DO wish we had another higher framerate camera!
The hip shot seems like a good move, I know you have been shooting low and tight already... I suppose you look for anything and everything that can economize on the movement necessary to get the shot off.