Duct tape all the way, it is The Force (it has a light side and a dark side and it holds the universe together), but I've said that before!
IMHO you are better off getting a purpose made head cam, then attaching it to your goggle ears/strap (or even your barrel) please remember that you can only film at events with the permission of the organiser and/or their existing media partners.
Tom, where's that certain German, ideal candidate for your drill.Borg conversion