I have heard of a pilot paying $250 for crop damage. After countless field landings I have never been asked. I had the crew bring a nice bottle of cab to an angry farmer. I usually keep two unused contest T-shirts available as gifts to landowners and their family. Photos with the farmer's children in the glider are a big hit. Dick Schreder used to give away a Sears catalog, but that wouldn't fly today.
Gentleman pilots send Christmas cards as thank you's. Rural mailboxes typically have names and road numbers, so you can surprise them later. Motorglider pilots don't know what they are missing.
Rick