Aluminum double floor

[Gerald]

Originally Posted by CajunChristian

Sounds crazy, but it serves 2 purposes. Take those clear plastic water bottles, empty of course, and fill the floor with them. Pack them under the floor very tightly. Stops the rattle and serves as flotation that will never soak up water.
And use screws instead of rivets, you can at least remove the floor to check under it for cracked ribs.
D

"those" bottles are now made so thin, they probably would wear a hole in them fairly fast. Fill the void area with some spray foam to add floation.