Christian, welcome to SimV,
Bill Lyons vintage Travel Air biplane
(2004 Travel Air package) has banners that can be toggled on/off on a couple of the aircraft.
'... Banner towing practice..?- Not sure that it fits your needs as the banners are unanimanted and do not change the flight dynamics.
The package is an auto-installer and contains the aircraft along with vintage scenery, ai aircraft, flights and some extras. It is designed to fit nicely with vintage scenery, such as Golden Wings 3.
There is no uninstaller so if your not sure you want the 'vintage scenery' aspects of the install, point the installer to a temporary folder and copy the bits you want to your sim.
Dave
At that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation. Igor Sikorsky
I intend to live forever....so far, so good. Steven Wright
You know....you can just rip up a to-do list.