Originally Posted by BelSkorpio
I'm not convinced that a 9.6 is as powerful as a 10.9.
Getting onto the plane with it, yes. But pointing upwind, doubtful.
For me I found the 2011/2012 Ultrasonic pretty poor upwind unless well powered, where the 2013 seems to easily fly upwind, even when not fully powered(using the same fin of course)