Sometimes you just can't find things that will work for a particular situation. There are many, many places in this country (millions of acres) where it sounds like you might be willing to go, where satellite is the only possible connection. No problem taking a satellite mobile, whether it is manual like you are talking about, or automatic like mine, but there is a big problem downsizing it. The dish will have to be at least a .74 meter, and I can't imagine transporting that routinely by motorcycle trailer.
If you can figure a way to transport it, I would recommend buying from a reputable tripod satellite internet dealer, who will provide adequate training. Too many fly-by-nights do not. Check the files in the Yahoo group RVInternetBySatellite to see some lists of recommended dealers.