Don't know your trailer floor plan, but I bit the bullet and shelled out for a Directv Weingard HD full auto slimline, to replace my carry out dish. It's already saved a few arguments with the DW, compared to setting up manually.
The dealer installed it just aft of the bathroom vent but in front of the kitchen vent. Instead of drilling to clamp the cables from the dish to the coax nubs, they puddled some white sealant every 2 feet. I'm actually okay with it because it's less holes in the roof. The cables go to an area above the bedroom TV. Then there is a weatherproof low profile shroud where the cables go through the roof and it is heavily sealed with a white sealant.