I used to have a landing pad but stopped using it. Hand launch/catch is far easier.
The mavic is so low to the ground even long grass can interfere with the gimbals and props. And a slightly sloping surface, sand, dust, water, ducting, wiring,metal pipes and everything else. Unless its a very clean surface i wont fly from it now.
Hand take off i hold it thumb and finger nice and high above my head with one hand and with the other hand swipe the auto takeoff button. Loosen grip when you feel it start to support itself. You can CSC and left stick up otherwise.
For recovery i'll *never* let it come down and land on my palm. The last thing i want is a drone descending or moving towards me not under direct, immediate control. This is especially true if its gusty or on a moving surface like a boat.
So for recovery i have it hovering slightly above head height nice and stable. I approach from the side then reach under it, grab underneath and on the side using a thumb and finger. Once gripped the other hand is left stick down to kill the motors.
If you have landing protection off it wont try to fight you or rev the motors either.
As for risk of drone damage, hand methods i suspect are better for it because its not kicking up dust, water,small rocks or hitting anything with the props. Also on congested area like boats with rigging, wires and masts its a lot easier to hover and grab than to navigate an assault course with potential magnetic interference and land it on the deck.