Florida domicile people do you stay 6 months there?

As WilliamB said Fl SD and Texas are common along with Escapees, Dakota Post offers some of the same services and their site highlights the advantages to their state for domicile.
One side note, and I have not fully investigated it but you may want to consider is health insurance, if on Private health insurance, Florida I have heard has the best options. If on Mediscare state doesn't matter as much.