Very, very, gently. Also the wheels I used are the largest in the default set, and they seem to have some pretty good suspension... well, some suspension anyway. I have not checked to see if the suspension mod has been updated for .20 yet, I imagine that would help you absorb the shock of the landing. I've also used regular landing legs attached to the sides of rovers and deployed them before detaching from the delivery system. Then just pulled up the legs and drive off. But Wade here landed on all six wheels. Like I said, very gently.