Like Half A Kite On A Pole

http://inflatedwingsails.com/en/concept/

At first I thought this was LEI -is not equal to a- Foil Wing graphic on his webpage



http://inflatedwingsails.com/en/concept/

Vector direction and placement advantages...but could have also shown a longer lift vector/value too...





Reference:
http://www.omerwingsail.com/Lift-Drag/

Apologies to the LEI fans

How about this instead:

https://sites.google.com/site/iwbeatsiceboat/