The selling dealer installed the Tave'ler HD for DirecTV at our request on our 414. It is roof mounted slightly off center towards the curb side about even with the kitchen fantastic vent. There are no worries about wind lifting the antenna when traveling, it rotates to face rearward then stows itself by folding the LNB up to the dish and folding everything flat with the back of the dish pointing skyward. You would probably have to travel in reverse at highway speeds to get the dish to lift no matter where you mounted it.
The installation instructions just say to check all clearances around its rotational axis.