Cliff - when I came down a few months ago a few companies listed Rangers but none had any available
All I could get in the Ford family of 'trucks' were Explorers or Expeditions
They were $68 per day and I would recommend the insurance if you are going to have any off road adventures
Renters can not have a variable rate based on age, just a restriction as to if they will rent or not
Use the internet and book at least 2 weeks in advance
Pick up and return to the same location for the best rate - good luck !!