I rely on a combination of the technique recommended by Ham but I also incorporate a slightly wider stance just before sitting or sliding onto a stool, which expands a few of the pleats to allow the material to drape more easily. I think it is subtle enough to not be noticed, at least no one has said anything like "Hey, did you see that guy in the skirt take a slightly wider stance?" :grin:

I think it's a lot like fly fishing...the basic steps are the same for everyone but you find your own technique that works for you.