http://www.gingliders.com/home/frank-brown-on-the-new-world-distance-record-513km-in-brazil/

There must have been some difficult moments in the flight...

Many—the start was very hard. At 7:45am and heavily loaded due to the 40 km/h
wind, we were sometimes flying backwards. It was so hard that Rafael Saladini
had to land at 8:00am. The strong wind made it feel like being on a small boat
in a strong river. It was like just floating and being carried along by the
current.