S!
Flaps on Bf109 needed some 20sec+ to be cranked out. The trim wheel had a LOT less movement(tail plane moved some 2-3deg only) and according to some pilots they used trim in combat to help start the turn faster, was called "ace trick" by Finns. Kyösti Karhila said as little as 1/4 turn of the trim wheel and pulling throttle back a bit helped to get faster into the turn. Basically it was setting the plane a bit "nose up" trimmed and kept level with stick forward pressure. So no magic there IMHO.
Also do not forget AGILITY is not same as MANEUVERABILITY

Still recommend reading Robert L. Shaw's book Fighter Combat - Tactics and Maneuvering. Gives some insight and examples on maneuvers, for example using a less maneuverable plane vs more maneuverable plane to get an advantage etc. And again if a blue pilot has flown for example Bf109-series exclusively in every single game that has been released, he for SURE learns fast how the modelling of it is in the new game and adapts. Again no magic.
Back to topic. The update was a nice one and much appreciated info on the patch status