I ran a separate cable for my satellite receiver down the windshield pillar to a location under my front bumper to a barrel connection. I then ran another cable from there along the mh frame to the back bumper to a barrel connector.
If my dish is near the front of the MH I use the front connector. If its near the back I hook the second cable to the front connector and the dish to the connector at the back bumper.
That way I don't have too much cable from the dish to the MH to trip over.