You could buy horz tanks like they use for towmotors, but they are expensive. Nice things, easy to handle easy on/off. Good guage built in. Lot of money for n big advantage. I have a long hose feeding my changeover valve and when we get where we winter, I call the propane guy. He comes over, sets a 100# disconnects my 30#,hooks up his 100#. If the 100 goes dry I just move the hose back to my 30 until he could come again with a new tank. When I leave in spring he comes gets the 100, figures roughly how much gas is in it and credits me. My out of pocket, just the gas I used.