I agree with some of what you said,a photo is
not proof and can be faked quite easily,as far as
the crop circle thing goes, like you said they have become more complex in recent times,so much
so that it would be extremely difficult for even a large number of individuals to pull off such a fake in such short time,some of these have formed
right under the noses of scientists in particular
locations overnight.the two guys in england,doug and dan if i remember correctly,who admitted to making these,could not possibly have made the much
larger more complex ones.
I believe in IFO`s ,i saw a craft in 1976 hover
ing motionless in a thunderstorm it was the classic disc shape,it had three equalateral protrusions with a light in the center and lights
all around the edge,every time lightning discharged around the craft, i could see that it looked like it was made of a highly polished metal,almost like a mirror,this was no conventional aircraft,so i identified it as an unconventional craft possibly of extraterrestrial origin.