“Sailplane wings are designed to be extremely efficient but the smallest amount of contamination from bugs or rain can degrade the performance up to 10 points….
In areas with a significant amount of bugs that get caught up in thermals it is necessary to take advantage of “bug wipers” to remove large amounts of bugs. It essentially consists of a sail that opens up and slides along the entire leading edge with a filament that scrapes the bugs off…
before you reel it back in by hand or electrically…”
Mike Westbrook
Wow… now that some bug juice!