Hot Air Balloon & Radar
Just a little survey amongst you ATC people. When hot air balloons are in your airspace can you actually see them on radar, or not at all? (This assumes they are not transponder equipped....) I am interested in the capability of radars to detect small aircraft, and because of the material balloons are built out of, I assume they are one of the most difficult to detect, although microlights and gliders and also probably quite hard.