Many ways to do it, one of the easiest is to put the plane sideways with the rudder while you are banking before the deflection shot.
As it moves across your screen twds your gunsight, the target will show up (from the pilot's pov) between your wingroot and side of fuselage. Depending on how your pulling to line up your lead, you'll have a certain number of times to check and recheck (correct) your merge/snapshot heading, by combinations of aileron, rudder and/or elevator inputs.
You can capitalize even more by offsetting your second fwd view.