Finally had two days average 10 knts on 7 m ozone hyperlink to compare three wings, the first wing I made I modified to have some minor reflex and changed from flat bottom to semi semetrical, this improved pitch stability.
The second wing with reflex I did not change and is still best all around.
The third ( new ) wing is semi semetrical, thinner profile with typical reflex for airplane wing and slightly flatter tips, it has more rounded leading edge outline and tips further back from root @ trailing edge. this one is the most fun to ride at slower/mid speed and is faster but is harder to ride fast, it feels most "surfy".
I also made 90 x 43 lightweight board, this board is easier to control pitch and very fun to ride but also almost impossible to switch feet on, it has mind of its own in the moment of unweighted to switch feet.
Total weight of board and foil 3.74 kg
On this board I have total failure to ride rodeo, on 120 x 42 board I still have not achieved more than approx 40 to 50 meters but haven't tried too much yet.
@ Horst ,. I am very interested in the result of your adjustable fuselage, it is my feeling different positions of wing to strut is important but very difficult for me to test .
Storms are back again so no kiting for several days