Ah. There's the misunderstanding, then - I was given to understand that second person referred to fixed third person from the perspective of someone other than the protagonist - Watson observing Holmes, for example. A quick rifle through Wikipedia shows me that I - and by extension, my grade 4 teacher - were wrong about that.

Having learned that, the only use I'd have for second person would be in text adventures. I was actually suggesting a fixed third person account.