I'd say so. Started on Lane 1 and didn't get a firm range until I got over to the lakes. 5 yds of haze change at the very best.
Didn't help matters that I trusted my windicator, which I can only guess was being pulled into a vortex as the wind came behind me... 3 down was not a good start.
I reckon what the afternoon lacked in strength it held in mystery for a lot of the course.
Pics are here. (thread posted because inline images are disabled on this forum)