Crank up dish? Boy...that's really old school.
Your best bet by far would be to install a Winegard Trav'ler automatic dish antenna. Domes are limited to SD if you have Direct but will get HD with DISH. Domes are also much more susceptible to moisture on the outside of the dome...rain/show will shut it down and I've even heard that heavy dew can also. Domes typically will only lock on to one satellite at a time and if you switch channels that is transmitted on another satellite, there will be a small hesitation in the signal.
With the Trav'ler, one push of a button and the dish will raise from it's stored position, find all and lock on to the required satellites and no hesitation between channels.
You should already have a crank up OTA batwing antenna and they work just fine once you get it pointed in the right direction and are not too far away from the transmitting tv station. You will also have connections outside for cable or external (portable) dish antenna.
We use DISH at home and just remove the receiver from there and install into the mh. If we travel outside of the "local" tv area, I contact DISH (via their website) and change my service address.
Hope this helps
Ron