strafe mode allows you to slide side ways and up and down while having your view locked forward. What i do is slowly zoom in on the enemy as they get closer to my gunsite, then i engage the strafe mode and i sit up in seat slightly and fire, the higher the deflection under your nose the more you sit up to see over. Note this only works with planes that have an over the nose view, so corsairs spits and such are out of the question, great planes for this are the hellcat, p38 and p51.