Today was the first time I had a chance to go up for a few minutes and try things out. One big problem with aviation videos using the GoPro, and other cameras, is how the propeller is captured in the video which make for some weired visual effects. It's call aliasing. It can be mitigated some with neutral density filters. There are some good, and expensive, options out there, but I decided to give the Polar Pro filter a try. I think it worked out pretty well. Now I just need to work on some mounting options.
You can see the results in this video: