I have been playing with my FPV racing quad and having lots of fun with it. I don't plan on putting a Gopro on mine so I just used the DVR feature of my Fatshark Dominator HD goggles and recorded what I see. I have learned a few things so far about race quads that I figured I would pass on to others looking to get started.
1) Use omni antennas like the spherical ones from Fatshark. The higher db antennas I use for aerial photography drop out easily because they have a narrower window. With the race quad you fly all over the place and get in some interesting orientations that seem to add distortion to the signal right at the worst possible time.
2) Buy lots of batteries. The 4s 1300mah battery lasts about 3-4 minutes if you are zipping around. Practice makes perfect so you probably want 4-6 batteries. The hard part is keeping them all charged up. Remember to label your batteries so you can keep track of ones that might be going bad.
3) Acro aka manual mode flying is how these are designed to be flown. I only use angle aka self leveling mode when I am landing and taking off. Even then, landings are a bit rough because you have to tilt the camera up so much.
I have not come up with a good practice method yet for improving flight performance but I will put one together if I can find a good system for training. If anyone out there is having fun with these race quads let me know.. as always I would love a guest article from someone who is an expert in this area! If the video below doesn't load, you can click here to watch it directly on YouTube.