Having owned lowered vehicles with aftermarket dams, I could relate with the misadventures. Entrance ramps, speed bumps, sudden spring potholes, expressway dips, drainage intersections, etc to name just a few choice locations. The vehicles' shallower entrance angles are always a bich. I've always appreciated the Corvette engineers solution to locate their deepest & ablative center air dams more inboard (feeding big mouth radiators) to mitigate road damage, yet still able to direct less air underneath. Here is an aftermarket solution (the round inlets allow brake cooling).
https://www.southerncarparts.com/ima...-Air-Dam-1.jpg