Can you tell me the reasons why you think the crop formation in post #519 is a hoax?
Sure, it is not symmetrical, but does asymmetry automatically disqualify a crop formation from being authentic?
The circles are irregular, there are obvious paths connecting the circles which would need to be there for humans with planks and ropes to wander through the field while creating the formation, and the pattern is non-geometric. There is no symmetry reflected in the execution of the design nor in the design itself.
And this WOULD be the perfect time for hoaxsters to get some attention in relation to the movie "Signs". And it would also be the perfect time for those wishing to discredit crop circles to perpetrate a hoax or two in order to reinforce the claim that all crop circles are man-made by hoaxsters.