What's My Rear Wheel Doing When I Ride? Under Saddle Mount Gopro MTB

I'm starting to get pretty amazed with rear view MTB footage because it shows a good representation of speed, steepness, chunk, and you can get awesome footage of your friends. so I decided to get an under saddle mount to play around with. although the rear wheel took up alot of the screen, I was amazed to see what my rear wheel was doing and the amount of sliding I was doing while riding. the trail in this vid is the hanh Buena Vista trail in cathedral city, CA, which has a rating of black diamond per mtb projects. this trail isn't too technical but has exposure, loose rock, small drops and chunk, and the dirt is silt. I would say that it's an easier black diamond.
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