I often need to hand catch my I1,
I2 and Mavic, especially when landing back on a moving boat.
Whilst I would strongly recommend that you AVOID hand catching where ever possible, if you take the following precautions they will at least help to minimise the risk:
1. Turn of downward sensors.
2. Slowly lower the drone to hover in front of you, just above head level so that any sudden horizontal movement removes the risk of hitting your head.
3. Remain focused and ready to push up on the throttle and/or duck down in an emergency.
4. Form your hand into a 'U' shape at eye level, making sure that the tips of your fingers and thumb are level.
5. Keeping the drone above head level, move your outstretched arm up to grab the drone from below. For the Mavic I grab dead centre from the side, making sure not to put my fingers higher than half way up the drone body so the can't come into contact with the blades. For the I1 &
I2 I grab under the batteries from the rear.
6. Now the important bit, maintain a strong grip and keep the drone level & above head hight as the drone can fight against you until you have stopped the motors and a feeble grip could result in an angry drone escaping to bite you.
7. As soon as you have a firm grip, pull the throttle down to stop the motors, maintaining a strong grip on the drone until they have stopped.
8. .... and breathe !