47 years ago they were innovating for snow kiting!? Well, maybe. I am not sure if they were working on resistance snow training or dialing in for a ski run down the side of Mount Everest. Ideas out there?
This is the current version of this old device. I lost the original image posted on kiteforum and linked here. Old files often vanish there, mores the pity.
http://sporting-sails.com/
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