Remote controlled sailboating...it's on a sign that the sailing club puts up when they are having a sail.
Sorry about picture quality...but trying to capture the movement of boats around the little bouys...kind of impressionistic looking!
The pilots (captains?) of the boats all have these harnesses across their backs.
Sharing this with Sepia Saturday this week...though of course I've missed again on having "old photos"...but the boats are floating around on the lake, so I couldn't resist the link to the theme this week!