Great suggestion. I read this article
last year, it wasn't about prepping or anything. But it gives you a idea, that your suggestion is on the right track. Doing something like that would help to keep you from trouble, and the ease of
egress and plentiful food below you is something to consider.
It’s not perfect - no plan in NYC would be - but it’s the backup I had in mind when I considered taking a NYC job long ago. I like your links too; it’s hard to think of NYC as beautiful and tranquil, but paddling before sunrise would make all the difference.