You guys got it all wrong.
Raisbeck King Air 300/350 Performance Systems
Look the increased Yaw damp limitation, consider the certification reasons..yada, yada, and it should be clear..
Not sure what you're trying to say... You get a higher yaw damp limitation because the strakes provide more aerodynamic stability at altitude, decreasing oscillations. As I understand it, it's basically a damper.
Flash... I believe in your last paragraph equivalent airspeed, not indicated, would be the correct term. It's important to make that distinction when operating at high altitude.