Hey,
I`m in сlimber sport and use GoPro 3-Way Grip
Here is little review:
The GoPro 3 Way is an ultra-versatile stick that can be used in three main ways — like a tripod, as a camera grip, and as an extension. It has a folding arm which is perfect for follow-cam or POV footage and makes it very easy to capture selfies. Unlike other mounts where the GoPro stick is seen in the selfie, the GoPro 3 way doesn’t thanks to its foldable arm.\
Jon