Whether using a PFA-130 or a PFB203W Wall Mount, you'll have to measure what flat areas exist, and see if they fit.
If not, a piece of pressure treated lumber that is shaped to fit the corrugated peaks and valleys to create a good flat mounting surface. Have you considered spanning two of the shallow peaks and just filling the top/bottom gap with clear sealant? Either that, a piece of PT plywood to fill make up the depth between two of the shallow peaks.
I'm working with a circa 1960's corrugated masonry surface now that has alternating 3" wide peaks separated by a 5" valley. I ended up getting some aluminum plate to span two peaks, then I'll mount the hardware to the plate.