If Hawks are in the area, they will own you no matter what you do.  The only thing you can do is fly high wait for the attack and have enough altitude to recover. Don't have the plane too far that you lose orientation after the impact.

once i had eleven birds hitting my aeroplane, complete canopy was useless, landed in formation, didnt see anything except buddy till touch down, back in 1995.

@theleabres, would have been nice to show the 'damage' sustained by the P51 on video, sir  
@augustine sir, WHOA!  

No damage occurred since I recovered.  Had I been lower, for sure a crash.  There were some slight very faint scratch marks.

Like the title says, you were an expert pilot to recover!

Gusty sir! With my flying level, I am really glad I'm on the ground, not in the cockpit