Which Satellite TV Antenna for Our FC 27FB

We want to add the Winegard Trav'ler Dish Satellite TV antenna (45 lbs) to our 2014 FC 27FB and the dealer where we purchased the TT says it's too heavy for the roof and recommends the Roadtrip Mission stationary antenna instead. Airstream customer relations says there is no problem putting the Trav'ler on the the roof. Who's right? Are there any other FC 27FB owners who have installed the Trav'ler antenna? If so, where did you place it on the roof? And are there any Mission antenna users who would care to comment on your experience with the antenna and its program choices?



Thanks

Rick