I own a Piper L-21B (that is a 1953 Super Cub for civilians).
It is leased-out to a flight school/airwork operator. Grass strip available.
They used it for training, glider and banner tow.
The manager informed me that he recommends his pilots to use the grass.
If only one thing, he said, it saves wear of the tyres.
Besides that, I am sure that L-21s were meant to use grass fields...
xxx
Happy contrails