The new method this past year that appears to be highly beneficial is to use various compass orientations of _vertically_ mounted panels. The solar cells got so cheap that every penny we spend on mounting hardware and rigid paneling now stings, and posts driven vertically into the ground which string cables tight between them are cheaper than triangles, way easier to maintain (especially in places with winter), and trade a lower peak (or even a bimodal peak) for a much wider production curve.