The 38 is a very pilot dependent plane, while its overall performance envelope is good its exploitable by most planes in the set. The flip side is that the 38 can exploit some aspect of the flight envelope for most planes it meets. However learning those aspects of the game takes time. I am far from an expert in the 38 but I'll give you the following thoughts I use as I continue to learn the plane...
1) When in doubt take the fight up
The 38 has excellent performance in the vertical, obviously anytime you go up you risk being a hanging curve ball...but up works more often then down IMO
2) When in doubt turn right
The 38 doesn't have the torque issues most planes have. Since most planes "pull" to the left going right is tougher at lower speeds. Combining both 1 & 2 is often a winning combination in the 38
3) Never ever "flat turn" a 38 more then 180 degree's. The 38 doesn't have the best pure turn and normally either a bit of nose up or nose down aspect works wonders. The 38 should be flown in the vertical as much as possible. If we view a "flat" fight as this[ - ] and a "looping fight as this [ I ] then we ideally want this [ X ].
4 Use the force
The 38 has tremendous rudder authority, this allows you to swing the nose thru a huge arc. With the nose come the guns...all of them. I can hit some ungodly FQ shots by stomping the rudder and popping off a few rounds. Do not confuse this with a Head On, in a dog fight both sides have to respect the "gun cone" of an opposing fighter. A true front quarter shot (or the threat of one) can influence a fight dramatically by forcing a bogy off of his ideal line. Do not chase shots that arent there or give up good position/E for a marginal shot, but realize that this is a strength of the 38
5) Flaps/rudder/throttle
The 38 needs to use them a lot....all of them. Get used to the following three things...
1) every turn starts with rudder
2) nose down turn normally off gas and 1/2 notchs of flaps
3) nose up turn on gas and clean or 1 notch flaps
You can use proper positioning to eliminate alot of the above (I know Murdr doesnt ever like to come of the gas if he can avoid it) but to me its essential to learn to use the above...
6) Lag pursuit
Basically having the nose pointed behind the con. The 38 is at heart an E fighter, if you pull lead to often and to soon you give up your greatest strength. By learning to use low/high yoyo's and lag pursuit (con in front up view) in combination with out of plane Maneuvering {thats the "X" we want to fly when he is either "-" or "I"} and using the 38's "power turret" {rudder induced yaw} you learn to stalk your target as much as fight him...
Again just 1 persons perspective and as always your milage may vary