I have a Wingard portable dome dish. Its a little pricey but ever so convenient. All I need is an open southern sky at about 45 degree angle. I set it on the ground or tripod, hook up the cable and before I can get inside I have TV. It sure is a snap. As mentioned above it is not HD. To get HD you need a HD dish either mounted on roof or on a tripod. The tripod method is sometimes a challenge finding the satellite and getting it peaked in.
Also as mentioned above I remove a DTV box from the house and put it in the unit.