Here is a quick cut from my DIY Chasecam. I have built a system that can film longer and in good position for XC flights. A Gopro usually only runs for a good 1 hour. My system with an Insta SMO from copters has a battery that lasts for 4 hours of video. The gimbal also has a large battery. I will use it to film the entire flight for the next few months in addition to uploading it to xcontest.
Yes - a bit roller coater there