Just for the record ...

the Tectonics Falcon F1 (36 cm) really works well under the Manta74 in combination with the 6.7 M2. The 38 cm long Vector Rockit G10 does'nt works under the board. Now I am convinced about that! I'm glad that it is the fin that does'nt works, while that is the easiest to change (and cheapest ;-) ).

With the Falcon F1 Fin I could really lift the board nicely.

The wind was more off then on ... hopefully tomorrow more steady wind.