Hey Buffyfan - it's good to see the skirts are coming out again.
Have a think about this, though - what is it you don't like people seeing? Your upper legs, or your underwear?
If it's just your underwear that you don't like showing, then you can always wear a pair of shorts under your skirt, so that even if the wind gets to it you won't show your underwear.
I remember many years ago, a friend of mine had a pair of trousers that tended to ride down and show her underwear at the waist. So she always wore her
bikini bottoms with them, rather than regular underwear. The logic was that a
bikini was meant to be seen, so that was alright. I'm not sure I followed her on that one - but she was happy with it as a solution that enabled her to wear the trousers, and that's all that counts really!