Whilst a traditional reasonably heavy kilt is mostly secure, if the wind really gets to it-up it can go. Problems are most often in towns when there are odd eddies around buildings-violent updraughts in the underground: whilst outdoors when the wind is expcted and more regular it is not usually a problem.

To make a comparison, back in the 50's when the girls tended to wear very full skirts-it was not uncommon to see them having a wind problem.

I'd suggest as mentioned in an earlier post, that the problem lies in the very construction of a kilt-the many deep pleats, once a breeze had got under it, it will behave a bit akin to a sail. As with the full skirts mentioned above.

James