In this disaster, an array of guns might well become barter for other goods of trade. I don't know if my 660# safe could withstand a 20' wall of water. Doubt it sincerely - just another anchor.
On the other hand, with space being at a premium, I doubt the wife would tolerate too much of the collection in tow when other essentials might be required. Hard to say in advance of a storm. No previous storm has been as destructive. After this one, the decisions of the future will be quite different.
Fair Chase
Land Owner