tony are you sure you are not talking about a stall turn?
Rather different in that a wingover is executed from a steep climb and the ailerons are the main instigator of the manouevre and a stall turn is executed from a vertical pull up, bleeding off speed before using rudder (with secondary small aileron input) to turn and point downward.
Pull the aircraft up into a steep climb, as the speed decays, start banking upto and past 90 degrees and as the nose falls through, roll off the bank and pull out of the dive facing in the direction you came from.
.......... remembering to reduce the throttle (on a fixed pitch prop) accordingly as the nose falls through the horizon or you will over rev on the ensuing dive.