WindPaddle Sails – Rigging and On-The-Water sailing instructions.
Idea from video: How can I fold the sail, Little tape for showing the wind:

DIY Cheap Canoe Sail!

Idea : Mast solution. (Ülésekre kötni, napernyőtartóba az árbóc)

Marshall Islands Canoe Racing on Trans World Sport

My experience: