It's pretty easy to strafe acks in any plane. Just make sure you have a lot of energy. Jink on the way in, open up and give the AA a burst, then jink away. Don't watch to see where your shells land, get out of there before the gun can train on you. Practice offline if you have trouble scoring hits.
If you are flying a plane with wimpy guns or a weak airframe, practice in a manly plane like a P-47D or Typhoon or Corsair, so you won't die as much while learning to strafe. Once you can kill acks with impunity in those planes, you will be good enough to do it in a wimpy plane. Even a powder puff like the Bf 109G-2 can take out the acks and hangar at a vehicle field if you know what you are doing.
[This message has been edited by funked (edited 09-13-2000).]