We had in-motion installed on our first MH. As long as it had line of sight it was fine. The Winegard system is a bit flaky in that when it goes to sleep sometimes you have to turn it off and back on to get it to go back to automatic mode. Even in the northwest with lots of trees we usually can easily make sure that we have satellite signal. With Dish we get full HD. It is extremely convenient for the kids to be able to watch TV. We have the kids turn off the TV if there is something outside that is interesting. I wouldn't have a MH without it.