I used a GoPro this peast fall at Reaperball,.. it was Redic's.
It worked well and gave some good footage.
Only thing is:
Its bulky and flopped around,.. you have to hit two buttons to get it to record.
The countour in my opinion is a much better value and option
I am in the process of looking for a used one with a good price.
We have a few operators at work that mount them in the cab when they work to show projects they are working on.
The footage is top notch!
Jai "P8ntbal4me" Menard