Here is what I did:
Get 2 30lb tanks and a change over valve like a travel trailer would use.
Turn off the tank that is attached to the motorhome and if you follow the the rubber line it will connect to a pipe. remove the connection to the pipe and put the one from the change over valve on it. Then when you need propane take the tank and have it filled.
parts list:
2 30lb tanks
1 2-Stage Auto Changeover Propane Gas Regulator with 2 12" Pigtails
1 Propane Hose, 10-Feet (from regulator to pipe on Motorhome)
2nd option is to install an extend-a-stay kit...
I didn't like it because I could only conn2-Stage Auto Changeover Propane Gas Regulator with 2 12" Pigtails ect 1 tank and I always ran out of propane in the middle of the night. not convenient.
2009 Winnebago Adventure 32h
2006 Terry Quantum 330FKDS (beach getaway)
2003 Aprilia Atlantic 500
2007 Honda Reflex
2 house rabbits "George and MiMi"