When things go wrong while flying it seems to be a common experience, especially among us newer pilots, to not have a clear memory of what we were doing when chaos struck. Hindsight isn't very accurate, especially when you're trying to remember if you were in ATTI / Course Lock and yawing left or were you in GPS and pulling the stick straight back? I've found that it really helps me to record my voice (I use an iPod Touch) from the moment I turn the GoPro on. For example, I'll say aloud: "This is the second flight, taking off in ATTI and headed south to fly a perimeter route around this field." Then, as the Phantom flies, I describe what I'm doing and what the Phantom appears to be doing. Later, I play the recording and sync it as best I can with the GoPro video. Today that really helped me when I lost orientation and wasn't sure if pulling back on the right stick was actually bringing the quad closer to me. From the ground, LOS, I had a lot of doubt but watching the video I can see that the Phantom did move as I'd hoped, but slower than I probably expected.