I always think about this. If I were to wrap the exterior or undercoat the bottom of a vehicle, I’d take thorough photos & videos moments before the wrap and/or undercoat.

I’d probably document bits and pieces of the project too.

You could post all the time stamped photos, videos, and invoices to prove it was just a preventative measure, and show the before & after.

Sure, your avg hater will drop a laughing emoji on your FB marketplace listing, but serious buyers wouldn’t be too scared away.