I think it would be more challenging to photograph men - since they usually (in my experience) run from the camera! Catching them might be the challenge! (Hardy har har) :0) Okay, sure. Women is fine. ;) Wind is good.
They both sound pretty good...Wind would be more challenging. Another idea I have is camouflage...anything that is camouflaged and that the viewer may have to look for.
For the camouflage I was thinking more along the lines of insects, rabbits and other wildlife, fish in a fish tank, and...well all kinds of stuff. I did get a kick outta da funny remarks though. A sense of humor is a great thing and I love when people make me laugh.