Learning a "trick" only turns you into a one trick pony without any knowledge of what to do when you find yourself in a situation where your "trick" doesn't apply. As Fugi and others have mentioned, take the time to learn BFM and ACM and practice, practice, practice. This way your "bag of tricks" will be full and you won't find yourself empty handed in any situation.
Look at Midway...he only has one trick in his bag and dies quite easily because he doesn't know how to handle situations where he can't use his "trick". Don't become a Midway.
ack-ack

Here are some of my tricks:
(1) When they come straight at you, veer off to the right slightly, let them think you won't HO, then as they hold their fire move that rudder with a quick slight snap and let 'em have it!

Softens them up for the next go around.

(2) Flop like a fish down low, turning every which way, until you hear the "poof" telling you they hit the dirt reaching for you. Then fly home with a

.
(3) If they are close behind you, dive a little to make them think you are going to speed up, then pull up, twist with ailerons, flaps out, full rudder as a brake, watch them zip by you confused, and let 'em have it from behind when they're in front of you looking for you.

(4) When they are above you, slowly dive, make them follow, and start a slow tightening diving turn. They'll be faster than you since they are diving from higher... and watch 'em hit the dirt when they black out or... if they go back up, immediately follow them up and let 'em have it from below.

(5) When they are to the side of you and start firing, jump up slightly, turning in to them, then when they come around to try again, keep circling until you see 'em come straight at you. Then see trick #1, above.

(6) When they are following you into the ack, turn tight circles, and enjoy the show, as they lose piece after piece of their pride and joy.. and determination... then you land nice and slow and proud.

(7) When they are in any other position, see trick #1, your fallback, when it's not your first choice.

Seven tricks...
...and a bonus...
(8) When they do get you often, up capped bases frequently, and HO on take off... gets their buds to come after you with even more vigor. Then as you die frequently upping capped bases... you'll always be able to say "Hey, I up capped bases for fun!" ... when they try to make fun of your score.

...and a double bonus...
(9) Fly a Spitfire MK VIII and when you get in trouble just start climbing, and watch 'em struggle to keep up. Then when they are nice and slow, quickly turn around and reuse trick #1 when they can hardly move.

...and just to make it an even ten...
(10) Go after the guy that is already heavily engaged, zoom by him with a quick pull of the trigger, and you got yourself an easy score. Might have to turn the vox volume down though since your country bud, whom fought so hard to get that one, has to watch you fly away with his victory. Just 'click' the mic and say...
"there may be other bad guys in the area"
...and land the victory checking to see how many perkies that earned you.

PS: Works for me and I think I can down roughly 95% of pilots these days.
