GoPro viewfinder

The GoPro is great except it lacks a viewfinder. I've got the back-pack, but either things are getting very small these days or my eyes aren't what they used to be. I use the GoPro on FPV radio controlled planes and multi-rotors, but sometimes I just want to film my or a friend's attempts at flying and trying to spot a plane 200 feet up using the back-pack is well nigh impossible.

So I created the clip on viewfinder. I know, it looks silly, but it works extremely well. Simply hold the came