kite flying perfectly, I need to test in a strong wind.
  Software surfplan. initially I used ikdesign , I sent to the author projects, but there was no answer ((
After the tests, and make changes to the project and was able to share them.

I had an old C-type kite size 14, which had a fabric in good condition. I cut it. Made a new project. Size 8, AR 5.33. Is almost ready. awaiting of the wind) http://i9.pixs.ru/storage/3/5/5/carinaJPG_1217985_14658355.jpg http://i9.pixs.ru/storage/3/7/5/fot036ijpg_6180539_14658375.jpg http://i9.pixs....

great video!
  air bubble is alive)

whether there are real examples of the use of such a profile Eppler Shen E900 or the like for keels ?

The theory is good, but I think that we will have to do a practical tests and compare the two versions: standard and inverted profiles

agree, differences would be difficult to see

inverted profile, meaning that the top line is more direct, and the bottom is convex.
hydrofoil model, I would say, a particular instance of

question
There are model hydrofoils whose rear wing profile is inverted. Why is this done?

I'm starting work on my second project. I want to get a fast foil. In my last project I used eppler e836 for keel, eppler 874 for front wing and naca 0009 for rear wing. What are the still variants for use at high speeds?
Thank

150x50 x90mm rounded nose fat tail.... something on which I ride ))