@Valerie: "It has always been my experience that most men are pretty sensitive to a woman's "vibe" — if a woman puts forward an "unapproachable" vibe, most men will respond to that and behave; conversely, if she puts forward an "available" vibe, many men will try to take advantage."
Not to pick nits, but if a woman is putting out an "available vibe," then is it really "taking advantage?" One wouldn't after all, jump immediately to the conclusion that the woman in question is messed up and not really trying to put out an available vibe. One would likely just assume that she means to do so. Maybe I'm alone here but I take the phrase "taking advantage" to imply the exploitation of some sort of vulnerable state. Picking up a drunk woman in bar is "taking advantage." Responding to a sober one who is blaring availability signals is not.
As others have mentioned, women think about sex, too.
Back on topic, though, I'm usually forced by necessity to hike solo and think nothing of it. My 8-year-old daughter seems to be getting very interested in hiking and camping- she was just asking about another trip to Great Sand Dunes last night. I will be doing my VERY best to avoid instilling an attitude of fear in her in the years to come, and am inspired by the testimonials of the women in this post.
Nonetheless, as a proud hypocrite, if she ever goes out on a solo hike I'm going to be a mess. For that matter the first time she goes out in a group that doesn't include ME wielding an Uzi I'm probably going to be a mess. But that's not really living in fear- that's just being a parent.
An anecdote-
A day's hike from any trailhead in the Wind River Range this past September my friends and I crossed paths with a solo female hiker at a ford. (That I recall this may support suppositions that solo women stand out to men.) She did seem just a bit wary, mumbled some sort of greeting, but ambled down the bank a comfortable distance from the three of us. I picked up on this, scooted a bit further from her, and did my best not to freak her out by looking at her. It, frankly, always surprises and disturbs me when a woman displays any fear about me. My buddy Sam, being a social butterfly, quite predicatably engaged her in conversation and she did open up and exchange some pleasantries and light chit chat. (Probably because Sam is about as threatening as a grasshopper, and most women pick up on that rather quickly.) Turns out she runs a dance studio in Bozeman and was getting in her final back country fix before opening again for the school season. Sounds like a great life, spending every summer hiking, eh?
So what is my point? Hmm. I really don't have one I guess. I just remembered it. Maybe the point is that being cautious around three strange men in an isolated location isn't "giving in to your fears." It's being cautious. And I don't think it ruins anyone's wilderness experience. I hope that I can teach that subtle difference to my daughter.
That, and jujitsu. :)