RVers have the full spectrum of dish equipment from a simple single LNBF on a tripod, to a 1000.2/1000.4 on a tripod, to a Winegard Trav'ler (1000.2) automatic roof dish, to a single LNBF automatic dome. The dome is what a moving RV would use and most of them can lock onto any one of the satellites (one at a time). The Western Arc is generally the best for RVers.
Thank you Brussam, what you are stating is exactly my point (The Seatel and KVH are for targeting the birds in a moving vessel therefore they're more expensive).
Assuming the western arc is the ideal for RV's the core programming is @ 119W, if the RV has a automatic dome capable only of one bird at a time, so let's say they have a condition where they want a CONUS channel out of 119W and the locals for the spot they just arrived is in 110W.....
Watch their channel on 119W and when they want the locals (ABC, CBS, NBC, ...) move the dish to 110W and make a check switch again??
The spot beam solution forces all RV's to have triple LNBF (1000.2) or at least dual lnbf (Dish 500) for 110W & 119W