My FFTOTD: Don't think about what you're doing. It'll make you fly soooooooooo much better.
I think there's a time to do jumps where you don't think about what you're doing. But, to leave your brain out of the equation all of the time is ridiculous.
A baby learns to walk without a bunch of overanalysis. So, certainly trying something new to yourself, like putting a single hand out in front (in prep for a dock), and allowing your body to intuitively "learn" and counter the air pressures is beneficial.
However, being on the ground, and analyzing your jumps on video DOES teach you something about what you're doing. And taking that knowledge in the air with you on the next jump is extremely beneficial.
When my teammate and I were working on headdown cartwheels, we did huge amounts of analysis on our techniques. Our ultimate goal (achieved) was to be able to do docked triple cartweels. I haven't seen anyone else do these. Without that analysis, I don't think we would have gotten as far as we did.
If you have a desire to see a docked triple cartwheel: