I recently had to cut a hole in the bottom of my 22 year old TT. I have a outside compartment door that leaks under the bathroom closet. It usually just drips a few drips inside. A couple of weeks ago I got caught in a storm that dropped 7 inches of rain on me in a couple of hours. The leak get bigger then!!
I had water on the floor inside of the compartment.
When I got the TT home and in the shop I started looking and found water on top of that plastic. I cut a few small drain holes at fist and then made the hole just big enough to get my hand in there and pull out the wet insulation. I did get a couple of cuts and did a little bleeding but, was happy to find the wet insulation was in a small area.
I did not cut a hole nearly that big and I think that one was caused by the TT hitting something.
If it is dry in there I would seal it up better and go. I wouldn't leave it like that though. Water could easily get in there going down the road on a rainy day.
You need to rig up some sort of patch.
