i like the turkey shoot concept.
youre in a furball when a lysander tootles through a few thousand feet below.
alone. >
or on your spit sweep and a couple of trainers or unescorted junkers blunder too far towards you.
perhaps on a take off, you have a junkers or trainer aircraft circling the airfield trying to land, not realising hes in england....
i believe these incidents did occur.
i have seen footage of a lysander being the focus of repeated gun runs as it dodges waves trying to get away.