I'll be running a GoPro at DWYB this Wednesday along with a data-logger and gyro so hope to produce some footage with data overlay which you'd be welcome to use. I'm hoping we can get some good data for drift angle, yaw, pitch and roll. Not expecting drift angle to be that accurate as you really need a dual GPS antenna system.
This is the sort of thing, using a Speedbox INS which is very specialised and around £12k