Are Chung on a Stick devices commercially available? I doubt I'll ever get one but aero testing is a pain. You need a very calm day. You need an isolated loop or a half pipe. Do you collect the data and return home to analyze? Do you bring a laptop to analyze? You need a control each day. You need to correct to atmospheric pressure, humidity, temperature, etc. What if you want to try different clothing? Where to change. It is a day of no training. A bigger question is how effective is testing a zero wind and zero yaw when real world conditions are far more turbulent. Where I think such a device would help is in optimizing body position because it is easy to fall back into the less efficient position,so, such a device would give real-time feedback. figuring out the fastest helmet or kit is easy.
