I got a brochure at Camping World regarding Dish's "Pay as you go TV" Just for RV's. It looks like a good deal. No contract. Pay by the month for usage and don't pay when you are not using it.
That's what I an going to do in April when my Directv contract is up. You do have to buy the receiver.
Will their HD work on a TracStar SV-360? Their HD for life option is a one-time $99 fee.
http://www.campingworld.com/dishnetwork/