So, I'm planning on building my own ground solar racking, as I am fairly handy and a cheapskate. I also really want to be able to adjust the tilt during the winter (Upper Peninsula of MI). I was thinking of doing something where I would bury a single row of 4x6 posts every 6-8 feet or so or , with the idea of drilling a 3" hole through them and threading a pipe through them. I'd also do the same through a sub structure of 2x8 lumber, which would be the base of the mounting. The idea then would be to lay purlins on top (maybe unistrut) for mounting the panels. I would mount the panels horizontally (2), which would mean for a long footprint but hopefully the weight would be well distributed. Just wanted to hear any feedback before I waste any time on a silly idea.