How are you getting on with the head mount?
Oops forgot about this.
As far as the head mount goes in terms of durability and holding a large phone such as a Samsung Note 5 / Iphone 6+ etc its sturdy & a good buy, takes abit of getting used to having something weighty hanging off your forehead. That said I probably wouldn't use it like an action camera during sports unless you find a sturdy case to mount the phone in.
In terms of filming a punt - It's not so good, I quickly learnt the FOV (Field of view) on most phones (I tried samsung Note 4,5, Iphone 6+, 5c) is terrible & not adjustable, I struggled to angle the phone into a good position that would allow me to capture all of the woman's body into the frame. Not a fault of the head mount - more a shortfall in the phone camera.
I was able to "borrow" a friends go pro Hero3 Silver for a couple hours, I didn't use it to punt but did a few tests with it and the FOV was much larger and I'm confident using it with a head mount would allow me to capture all of the body without cutting off her head/pussy/legs etc.
The only reason I haven't bought a gopro yet, is it seems that the Hero 5 isn't far from release and I'd rather wait for the latest camera, I'm fussy like that.
Also for those wondering what I mean by FOV here is a good youtube video; A note 4 and latest go pro are mounted side by side, notice how much wider the gopro's shot is capturing more information vs' the note 4's narrow zoomed shot. https://www.youtube.com/watch?v=qr1hI2LfLoY
hope this is helpful