I am not in Georgia
No way my marina is broadcasting, although that is a good idea. I don't know of any boat that has cable hooked up, most have sat dishes, and the channels I am getting exactly correspond to local cable. I have seen wierd things happen in terms of electonic stuff moving around in water, and it is possible that the water is acting as kind of conductor, but, my boat is fiberglass. This is also fresh water. The rebroadcasting to a second TV makes some sense. My boat is 40', but some of these monsters are 90'+ and may have some set up like that. If you drop a few million on a boat, you are going to want up to date technology. I have shore AC, I also have a 10KW generator with invertors, I can run anything I need to either way. I am going to study my options and maybe try some boost like suggested. My TV is about a year old, flat screen, not sure if its HD ready but I doubt it. Any more thoughts appreciated.
The irony here is I almost never turn on a TV except during bad weather.