I've been playing a little of rowan's Battle of Britian game and I'm pretty confident we can duplicate most of the Spit I experience in AH with a little effort. Since BoB is a british game, it must have accurate spitfire modelling so we'll just make that assumption before we start.
First step will be to make sure your AH framerate never exceeds 20 fps at any time. If you have the bandwidth, downloading porn in the background is a safe bet, 56k users you will need to be more creative on this one.
Take a Spit V with 75% fuel load. While still on the runway empty your cannons. You won't need those. Plan a course so you don't encounter enemies until you cross a body of water.
Now take off but never run above 2/3rds throttle (for wep) for cruising speed about 1/2 should do it.
As you get closer to your destination inform the other team you are flying a spit I and ask that only early model 109s running at 2/3rds throttle come up to fight you.
Pay close attention to the G meter. Make sure to hit the E key on the keyboard whenever it goes negative. This is cruicial to the Spit I experience so make sure not to forget in a heated dogfight.
Finally, when you do have that evil 109 lined up in your sites, be sure to shake the stick around furiously to simulate the difficulty of aiming in BoB before opening fire.
That should do it. It will be just like BoB but in aces high. Happy Spit I flying!
-sequence