I finally got my gopro with sunex working well and fully focused. that was total pain to do. I finally used a street sign down the road to focus it in. just lot of iteration in 1080 mode to get it looking good in video . once that was done, 720 mode also looked good. I am using DJI 450 quad with 8" blade and naza. about as small as you can go and get great results in video
here is 1080 mode video
and here is 720 mode. testing fast panning (was 60fps down encoded to 30fps in sony vegas. no stabilization though still)
I am pretty happy with how my gopro is working.
I am going to mount my panasonic GF3 on my quad next and see how well it performs on my 450