Genghis the engineer
I disagree - it's quite common if flying at a steep bank angle in a slow aeroplane to hit your own wake vortex. The vortex does not descend very fast.
I know that it is not uncommon, due to the reason, that it is not uncommon to descent unintentionaly in steep turns. What time do you need for a 360 in a C152? What is the span of a C152? Something like 33 feet? Most people will accept such a deviation in a steep turn as negligable. But loosing that altitude will bring you closer to your own wake, maintaining level keeps you out of it.
I know it is nitpicking, excuse my interruption.