GoPro Hero 2 line mount for North 5th Element

[SpaceRacer]

Hi,

Bought my son a GoPro Hero 2, which I want to "borrow" to get some of those sweet aerial shots from the line mount. 1) Can I just use one of the standard line mounts that they seem to sell in most kite shops? 2) Is it imperative to get the GoPro water floater so it does not sink the lines should the kite come down? 3) Is there some trick to keeping the camera from going upside down? Others have mentioned that this can be an issue but not sure what the deal is.

Thanks!