I like collaborative works, or at least with group consensus... at least that way everybody feels directly involved, and gets to weigh in on things. I'd be more than happy to run the show and play the game engine, and help arbitrate when it comes to decisions. I.E,, I could GM, sure. I'd be my first run GMing on The Guild, but not my first time in other venues. I would certainly appreciate help. Koko's input would be welcome,as well as anybody else who knows much of anything about Florida. I'm a little nervous about it, just because I want to do it right and be successful with it. I want to make something that keeps people interested. I'm pretty big on freedom, so long as there's logic to what happens. If you jump off the side of a cruise liner to water 100 feet below, it -will- be like jumping onto concrete. You will break bones and most likely die. Half that distance, it's just gonna hurt, and you'll probably go deep. Ears might pop, might hurt your inner ear, but survivable, sure.
I'd want to place an emphasis on survival, in that track your food, water, health, fitness, stamina, injuries, and how hot or cold they are. Zombies are there, and they're a problem, but so is the loss of amenities, and the need to provide for yourself without supermarkets, grocery stores, gardens (if you want to start one, that's awesome), and so on. There's an adjustment process, and a learning curve. I wouldn't want people to track it to the point of not being fun, but just something to keep in mind. Also you boys and girls might pick up a few things, if it goes on long enough.
I had another thought for an option on the water would be a transport ship or barge with cargo containers, which may or may not have had lots of supplies.
I'm still up for the yacht idea, but yachts also have drawbacks unless they're a sailing yacht.