Freedom Tennis has come about down in these parts of the South to fill in the gaps between USTA league play. It uses the same USTA rules. You just sign up as a team or as a singles player and they make up a schedule. Costs like $12 for 6 weeks.
They play throughout the winter down here (outside) and throughout the summer. All the matches take place in the city you live in (ours is small). Home team chooses the court. It's starting to catch on.