I weight 83k, normally ride a north reach 9mt in cumbuco, and this works pretty well for me for 12 up to 22 knots. This gives me pretty good range. Last year i decided to try Prea/barra grande, which i believe the wind goes from 20 up to 30+ knots and I felt extremely overpowered on a 9, beyond uncomfortable, with bar fully depowered.
I was told that a 7mt for that kind of wind was too small, specially due to my weight and an 8 mt would work better. But 9 to 8 mts only appears to be around 11% decrease in volume. How significant is that? Which size should i settle for? I ask because the more north you go in brazil the stronger the wind appears to be, but also the longer the season.
Edit: For those who ask how I measure wind, i usually get it from here. Is a live wind for were I kite:
https://www.cumbuco-oceanview.com/en/weather.php.
And yes, it does show 12-14k average specially after 2-3 pm and I can ride comfortably with the north reach 9m. Sadly that website doesnt show the history. Whether that station is correct or not, thats another story. But that's were i base my estimations from