The rear props are so close to the ground that it would not take much of a slope for a blade strike to occur, with potential blade damage. In this case I always hand catch, with a Phantom it was easy and safe, with the Mavic is is harder and requires a certain procedure. I find that if I position the Mavic just above my head with its side facing me and then flip off vision position sensing, that way it doesn't try to avoid my hand, reach up an grasp the Mavic from the side just behind the gimbal with your thumb and index finger using your others fingers as support it is very easy to hand catch. Here is a couple quick photos to demonstrate.
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