I have been videoing hunts for over 20 years.
Quality self filming your own bow hunt is probably one of the TOP most difficult things I have ever attempted.
It has cost me more than one deer. I finally realized after years of trying bow mounted cameras, helmet mounted cameras, tree mounted cameras (arms), and finally-tree stand mounted cameras, that is is extremely difficult, nearly impossible, to get good approach, zoom, shot, and follow up by yourself.
The new go-pro camera has promise, but zooming is still a problem as is screen monitoring.
Go-pro will definitely add some interesting angles and apps are always coming out for these tiny cameras.
But nothing beats a camera man. NOTHING.
I carry my video camera with me always. I film past up shots, borderline bucks, and lots of recoveries.
I also get footage of the one that got by out of bow range, not camera range. I have some impressive bucks on video. NONE of them did I ever see twice. Except the 150 inch that my buddy missed the evening before, on film, at 38 yards. We saw that buck again the next morning, at 23 yards, he missed it again.
(yes he was upset).
The fun thing about videoing is it just adds a new dimension to your field notes. I always review video from the year before and pick up some good tid-bits not noted in my field journal.
I have 5 DVD's from last season. I am on the second one now for review.
Good luck, have fun.