Hey, my only advice after several years of cutting and burning hardwood- put something under your stacks as another member mentioned, to improve air flow to the bottom layer and keep it off the ground if the ground is wet. Old railroad ties, if you can get them for free, work really well. They don't rot and keep your stacks level if you dig a little trench for em.
I use tarps only to protect seasoned wood ready to burn, so I'll cover the 5-6 cords of the oldest wood in the fall and take from that all winter to keep the rain and snow off it. I'm on a 2-3 year cycle though, so it's all pretty dry by then. Doesn't sound like tarps would much benefit your business anywhere.
I also went to school for engineering (mechanical and fire protection). If you have any questions about that too, feel free (not that I'm an authority on the subject or anything).