On Friday, June 5, 2015 at 12:21:57 PM UTC+2, Jim Kellett wrote:
On Friday, May 29, 2015 at 3:30:32 AM UTC-4, Philip van de Donk wrote:

At the refinish I want to have the orange markers back on.

This would be a good opportunity to leave the orange markings off. Many years back, there was a study in the UK by the Cranfield Institute that confirmed that the orange "anti-collision" markings so popular actually made the glider LESS conspicuous!

This is not an option as I often fly in France where orange markers are mandatory. I also believe if it improves visibility by only 5% then it is worthwile to put them on.

Had such an experience only yesterday when a glider approached me head-on. It had the markers on the wings, and I had just spotted it in time to perform evasive action. It was already a little too close for comfort. Without the markers on its' wings, I would have spotted it later and I rather don't like to think of what might have happened then.....