Sammy1Mason recently posted a great video that breaks down the awesome procedure of attaching a banner to an aircraft. The process starts with the aircraft already in flight, and the banner waiting for it on the ground. The banner is attached to a cable which is suspended by two vertical poles parallel to the runway.
To pick up the banner, the pilot must “dive” towards the poles in pretty dramatic fashion. Just before snagging the cable, the pilot must then pitch up to reduce speed as the banner is dragged into the air. Once everything is hooked up, the banner trails the aircraft by about 300 feet. Attaching the banner may not be as difficult as snagging the arresting cable on an aircraft carrier, but it sure looks like it takes some time to master.
While the process to attach the banner to the aircraft is pretty awesome, the process to get it back on the ground is pretty simple. The pilot lines up with his intended target and releases it, hoping the wind doesn’t force it too much off course.