One method we've used in the past and a friend of mine uses all the time is a mobile data plan from Verizon. You purchase a MIFI device and use it like a home based wireless router.
Pricing is similar to WildBlue or HughesNet but it uses Verizon towers and is 4G speed which is about 8-12 Mb per second. It's as accessible as your phone calls, which is about everywhere.
TMobile, ATT and Sprint all offer some version of this. And most recent smartphones can act as WIFI hotspot.
2017 CC38EL Silverado 3500HD