Tracktor - cool footage!!
Runin - yes the phantom can carry the gopro with the waterproof case but if you run a gimble you will most likely have to take it out of the case to fit it on the gimble.
I tried out some filming last summer from the moving boat.. it was a bit nerve racking flying $1200 worth of stuff over a lake but really wasn't too bad from inside the boat..
The biggest issue I had was trying to frame the shot. That's why this year Im going to upgrade to FPV so I can see what I am filming.
Here is a little edit I put together from that session.. In this video I did not have a gimble so it gets a little jerky.. I have since added a gimble and it makes a WORLD of difference...