found soft spot in floor

Lynnmor wrote:

westend wrote:
You will need to gain access from underneath the trailer. Remove a section of belly covering, perform the repair, and reinstall covering. I'd bet you will find a bit of wet insulation and moldy framing from the leak.

I would probably go the opposite way. Pull the shower surround and base, then build it back up like it should have been. The shower floor is a marginal piece of junk and can be replaced this way.

That may certainly be a better method. Hard to say without images of the shower and drain plumbing. My drain connection for the trap underneath the shower pan is accessible from underneath. If there are glass panels and doors involved, it may be less time consuming to operate from underneath if it is only the drain fittings that are loose.