A couple of days after Christmas we packed up and headed toward Florida to thaw out. Literally. We’d just discovered that the low-temperature limit of our Arctic Fox travel trailer is 5 degrees and our fresh water tank was one huge ice cube. We’ve had plans to be Florida snowbirds for at least a year because that’s how far you need to plan in advance. Our first stop was Hanna Park, owned by the city of Jacksonville. Hanna Park is awesome. It is oceanfront and the full hookup campsites are tucked into a jungle of live oaks and palms. And it has mountain biking trails! We loved walking to and…