Put together the full gopro assembly to make some cinematic footage.  There wasn't any obvious tracking difference over 100 epochs.  Maybe it had more affinity for traffic lights than 100 epochs.  

Body tracking definitely is locking on far more reliably than face tracking.  The bigger target means much more immunity to ghosts & harsh lighting.  It's able to get the much coveted shots from behind & facing the sun, which in turn causes it to get used a lot more.