Thanks for the interesting example. You're right that this is unlikely to redeem a scaled up dandelion, but I thought it was still worth mentioning as it's often overlooked.

I work in internal and multiphase flows, and changing the turbulence level is much easier there than in aerodynamics.

I'll also have to look at the parabolized stability equations as I am not familiar with them. If you have a preferred reference, I'd be interested.