You laugh, but I had what LOOKS, I say looks because I will not admit on the internet to having an actual BNR (Burlington Northern Railroad) sign as a floor pan repair on my 77 F250.
My 73 Bronco also has the original rusty floor pans, then PO installed fiberglass and then tread plate floor pans. I just covered it with mud off my boots from a creek crossing. I had to get out mid stream and hand the tow rope to the chebbie that got stuck behind me so he could follow...lol
I also tread plated the complete front seat pan area, so the Mustang bucket seats, ammo can storage/Ford Ranger armrest have a better place to attach to. And I have a storage area under the passenger side seat now.
You know if you peel and onion to the core, there is a genie inside. lol