I made this just for personal use/reference on Word (I know, total dork) so it may be a bit hazy, but you should get the general ideas.
FAKE-OUT:
FLY UP HIGH (200+ FEET), BAIL OUT OF THE GS, WAIT FOR IT TO FALL BACK AND THEN WHEN WANTED ENTER THE GS AGAIN. DON’T LET THE GS HIT YOU HARD WHEN FALLING OR IT WILL KILL YOU.

QUICK TURN:
PRESS ARROW KEY TO GO WHATEVER WAY YOU WANT, BUT AT THE SAME TIME ANGLE THE MOUSE OTHER WAY TO TURN SO THAT BOTTOM OF GS IS ANGLED TOWARD CENTER OF TURN.

LOOPING:
FLY UP, THEN ANGLE MOUSE SO THAT YOU COME AROUND IN A FULL LOOP. FOR LOWER ALTITUDE LOOPS CUT POWER WHEN FULLY UPSIDE DOWN. DUH!

FLYING UPSIDE DOWN:
FLY UP TO 100+ FEET, FORCE GS INTO UPSIDE DOWN POSITION (EITHER BY DOING HALF-LOOP OR OTHERWISE) ANGLE MOUSE SO THAT YOU SEE THE SKY, CONTINUE FLYING. TO RIGHT GS ANGLE MOUSE FARTHER UP TO YOU ARE RIGHT SIDE UP. TO TURN GS ANGLE MOUSE TO SIDE WITHOUT ENDING UP COMPLETELY UPSIDE DOWN.

FAKEOUT LOOP:
GO UP 300+ FEET WHEN BEING DIRECTLY FOLLOWED, BEGIN DOING LOOP BUT STAY UPSIDE DOWN FOR 100 FEET AND COME DOWN, THE FOLLOWER WILL HAVE THOUGHT THAT WHEN YOU STARTED THE LOOP YOU WOULD HAVE DONE IT IMMEDIATELY AND BEGAN GOING BACK DOWN TO EARTH, LOSING YOU IN THE FOG.

FAKEOUT LOOP VARIATION:
WHEN BEING DIRECTLY FOLLOWED GO UP 300+ FEET, GO UPSIDE DOWN BUT FLY UPSIDE DOWN FOR 100+ FEET AND THEN COME UP FARTHER, GIVING YOU HIGHER ALTITUDE AND MAKING THEM LOSE YOU IN THE FOG.
You always want to be behind your enemy ideally. Coming from above also works well.
Tip: When you have to reload while you and your enemy are in close proximity, just head straight up and start looping around and stuff, anything to keep them off your back.
Tip: When you think you're in danger of crashing, just remember that as long as you have your nose pointed towards the sky you at least won't lose any altitude so long. as you keep that positions sustained.
There are lots of things that I haven't mentioned here or thought about, just improv is good.

Another good way to find stuff out (This is how I found all my tips out) is just by going on Youtube and Google Videos and typing in BF2142 Gunship...tips/moves/tactics.
Pay close atttention to any video you see that mentions the names AFeX^ (the clan's real name) or AFEX (the misspelling). They are probably the best Gunship clan out there. Top people there are KnifeOwnage, Crazy_Horze, and MillWall_UK and they appear in most of the videos. All three are in the top 100 Gunship category on the EA website I believe.
Sorry, ranting on here, but you could also ask some of the 11th about tricks and moves, the AIR are deadly.
Hope this helps