I've though about getting an RC heli with a camera, but they are a bit limited in terms of battery and camera, and following a disc, or getting hit by disc if already in the fairway. I'd love to see this become feasible. Maybe mini blimps are a better option with good PTZ.
This was my other idea, to put the cameras on the discs, it's not perfect but my thought was to just get a vid flying through the fairway and edit it into the vid:
http://www.dgcoursereview.com/forums...ad.php?t=47544