Thanks to Paul (VK2LQ/VK2PCT) for this useful antenna project.
While the description is a bit short on detailed instructions, the video does an excellent job of showing how to add a rotatable 15 meter dipole to an already existing antenna system.
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=9ocWVad6-Ug.
Here are a few comments from Paul:
https://www.youtube.com/watch?v=9ocWVad6-Ug.