I think the rottnest wind reader is broken
I went out leighton about 4 it was side shore with a tiny touch offshore really good waves (for leighton) it looked epic but then put the kite up and it was really patchy
did a few tacks caught a wave, got smashed dropped the kite, broke the kite, cleaned up the mess then the wind dropped off completely
you are a tricky tricky b**ch winter