But, I have to admit, the GoPro has a better form factor than the Drift HD 170. Not perfect, mind you, but the small rectangular shape and the relatively large array of mounting options for the GoPro ...

For example, it requires the bulky GoPro waterproof housing with the proprietary “fork” mount. The square shape of the Hero3, despite being marginally smaller than its predecessor, is still difficult ...

The ability to mount an iOS-connected GoPro with the image stabilizing Karma Grip can be greatly enhanced with a newly launched extension cable accessory, though it carries a $100 price tag.