I just plopped this way for the first time today and it's awesome!!! I couldn't believe the difference it made to how my curls arranged themselves, although it totally makes sense.
My towel is a big rectangle I made out of cotton/hemp jersey I got from a modern cloth nappy making web store. I had two points at the back of my head instead of one, but I figured who cares? It's about the double layer everywhere else and the not squashing the sides in the twirly way a traditional plop does IMO.
Anyhow, that's Struttswife!!

Sent from my iPhone, so forgive my typos.

3a, low porosity, protein sensitive, medium texture (with random coarse strands), growing out a pixie cut

Located in Tasmania, Australia