Get your flying buddy to catch them. After the engine quits, whip it back to the launch area. The helper stands inside the arc of the plane, catches the lines and lets the plane swing around him. Doesn't even have to touch the ground. No dirt from gopher mounds goes into the intake or the bearings. No messed up props. No punctures in the covering. Just carry it back to the pit area and put it in the rack while the next guy flies..... or at least that is how the combat guys out here do it!
If you are just learning this, I'd use a glove on the lines catching hand. I'd try to catch it about 3 feet from the wingtip, so when it swings around, you can keep it out of the dirt.
Or you could use the SLC as suggested. I used Coverlite on my Little Satan, and the only holes so far have come from transportation damage in the carry-all rack. No dope required, it is fuel proof.
Divot McSlow