If you think wineguard is expensive, look at motosat. This is why I use a tripod mounted dish when we are on the road. Once you do it a few times it gets easier. Since I use our bedroom HD DVR and have SWM at home, I bought equipment compatible with my home setup. This way it is just plug and play.
If you want HD you may want to consider this option. I also use a tv rf modulator to send a SD signal to the back TV through the existing switch-box in the RV. With the HD receiver you get the option to have your remote work on RF so I can control the DVR with my remote back in the bedroom. Works for me.