The landing "ship" was placed around 200 miles downrange of the launch pad. Thing is though, there must be lots of other places in the souther latitudes of the continental US that would have 200 miles of eastward stretch and still be on land. Are they saying that with a mobile landing pad they can move the pad to wherever makes the most sense to have a cost-efficient landing, based on the mass of the payload and rocket hauling it to orbit? FOr that matter, what about doing it the other way around and having a mobile LAUNCH platform? I'm guessing that would be too cost-prohibitive to have a big enough ship for the rocket, payload, plus fuel and all the stuff you need to put it into the rocket and control it... Not like there are many old aircraft carriers or supertankers that could be converted...
Mark