So. I absolutely love Superfly.

And I love dynamic clothing, except for a pet peeve: it has to be one-sided polygons. And then every render of that looks kinda fake, with those super thin fabrics breaking the illusion of realism.

In Firefly, I can fake thickness alright. Displacement tends to do it for me. But in Superfly, displacement doesn't work so well unless you subdivide your mesh into oblivion.

Are there any tricks to fake thickness in Superfly?

The structural part must be one-sided. That says little about the presentation part. You can try to add the overturns of edge seams as soft decoration. Full double sided will not work and in general is not necessary.

Won't overtums just fall down flat when the dynamics are calculated? Or does setting them as soft decoration avoid that?

nope. They stay on but of course need suficient vertices to align.

Actual turnovers do work nicely also by the way. Make sure there actually IS a turn with thickness, so use 3 or 4 parallel fold lines.

I'm really not sure what you mean by "overturn" and "actual turnover" though ?

But it's very good to know that the soft decoration option does that. Thank you very much!