Skibby, I haven't tried mounting a Go-pro yet, but I have been playing with a Contour and some Key chain cameras and I also made several drop modules for dropping candy on kids at church. My drop module weighs about 6 oz when loaded with tootsie rolls. Make sure your Cg is a little towards nose heavy with the camera installed and shifted aft and you should be fine other than adjusting trim when you move the camera foward. You may have to reposition camera aft before landing if you don't like coming in hot for landings, but otherwise you should be ok as long as your cg is not too tail heavy. Nose heavy is managable, tail heavy on a Cub means it will stall with no warning . I can tell you that my .40 sized Cub is one of the most sensitive planes I have to adding things. If you have an 80 inch or larger Cub, it would probably be a better choice than a 70+-inch .40 sized Cub.<br type="_moz" />