Originally Posted by Ericred0
My isonic 135 used to be my lightwind board until i bought the ultrasonic, the US is much more an early planer than my IS the difference is very noticable no matter what your largest intended sail is. I sailed yesterday with my Tushingham Lightning 8.5 and had plenty of power.
I sail on a lake and need to pump through lulls and depower in gusts/shifts and the us is very predictable easy to control... Carves on the end of gusts nice..
I'm guessing, you don't have good pumping skill yet?