Seems to me the geometry of using mirrors is messy: at least if the actual sun hits the panel at a low angle you will get something out of it. But as the sun moves across the sky the reflected light from the mirrors could miss the panels completely at times and be useless.
Seems to me your effort would be better spent inclining the panels to , say 3, seasonal positions
Seems to me your effort would be better spent inclining the panels to , say 3, seasonal positions