Google "best states to retire in" and look for taxing structures as well as "a nice place to spend the winter". Some states tax the heck out of your retirement pention and SS. A few years ago the worst state for taxing retirement was Nebraska, of all places. Some will not tax at all. Good reading.... also there is the issue of your RV licencing fees and taxes.
Also:
http://money.usnews.com/money/retire...security-taxes