Might be worth putting some video up showing you on the board using the kinect and showing your monitor, rather than just whats happening on the screen.
We just published a sneak peak video on Vimeo where a couple of my colleagues are riding the Hoverboard VR. Check it out over here: http://vimeo.com/95960989
Did you use the Kinect to track the position of the head also? Do your test subjects experience more or less motion sickness with this compared to other VR demos?