I rigged the 8.3 because there was not much wind. I also wanted to know if the Mistral can be good with a 8.3.  It was ok, but the tribal was a bit small for this sail.

Halfway my session I felt the wind became a bit more steady (less gusty). It wasn't fast, but OK for doing a hour. I tried to do more than 40km/h and I succeeded, the 30min time was 42 km/h, so I guess this was as fast as I can for a hour in these conditions. Definitly my fastest 2017 hour :)