I represent competition, so please take my comments accordingly, but when you strap on a video camera, one tends to get a very long view, not even as 'large' as your eye view.
If a bow is stabilized, our customers have had no problem in holding the bow.
In regards to a gun, our customers have had both results. Depending on their ability to hold the gun and the magnification of the scope. Our product views through the sope, and provides a neat video view and record, when recorded. The product is also not heavy, allowing the shooter to more likelyhold the gun steady through the recoil. Adding a normal camcorder will add more weight and change the balance, much more than our product.
THought I'd give a bias input to help!
Good luck!
www.riflevision.com