One Hopper can support three Joeys. I don't think the Roadtrip Minimax is a good choice for use with a Dish Hopper receiver, much less two of them. The Minimax only receives one satellite at a time, limiting your viewing and recording at the same time to only channels that are on the same satellite. The Winegard Trav'ler would probably be a better choice. Also, Dish does not recommend the Hopper for RV use, although a number of us have used them successfully in our rigs.
Dutch
2001 GBM Landau 34' Class A
F53 chassis, Triton V10, TST TPMS
Bigfoot Automatic Leveling System
2011 Toyota RAV4 4WD/Remco pump
ReadyBrute Elite tow bar/Blue Ox baseplate