Sci Guy,

As far as I know, none of the STJ companies allow vehicles to be taken off the island. They are all independent agencies and not franchises. There used to be a Hertz location down by St. John Inn but I don't think they allowed it either. Even if they did the one way drop fee would be huge. The Car Barge is $30.00 for a one way from St. John to Red Hook, add time and effort and the charge would be well over 100.00.

You definitely will need the Jeep rental while on St. John. I would urge you to use one of the companies that will allow you to use their parking lot while in town, parking is a huge issue in Cruz Bay.

Not sure where you are staying on STT but the CA ferry might be an option instead of the Red Hook ferry on the way back from STJ. That will drop you right smack in the middle of CA within walking distance of several hotel/Inns.