@Daemon:
Glad to hear you'll be modelling it in your own sim. It's details like that that can make a huge difference to tactics and realism.
I'm 99% sure that Macintyre said 15 minutes, but without reading the book through I can get 100%. And if he says it, it's true.
I must admit I was surprised at how long it took for the turbulence to clear, but then I'm no expert in hyrdodynamics.
As for SH2, I think it was Mark Kundinger (sp?), one of the dev team who used to post on the Subsim forums, who said it was set at, or maybe around, 10 minutes. I used to use that blind period for a change of course and flank speed, and it was a very successful tactic. So, I do believe that the blindness period was modelled.