Frank and Beans
I just had the floor of my toy hauler replaced after water damage. I have parked a heavy boat in mine for years and never had a soft spot created by it.
With regards to "seeing" evidence of water intrusion, don't be so sure. Mine was weeping up from under the wheel well, in an area that was not sealed properly from the factory.
In my case, to properly replace the soft flooring, it was necessary to lift the walls off of the floor to properly get the new wood to the edges of the trailer.
If the trailer looks like a fair deal, I would inspect it appropriately and determine if there was a guarantee with the repairs.
Good luck with your search.
Bill
