So out of curiosity, how do you go about filling them? Looks to be a lot of work to do so. To bad there isn't set up catching rain water, not only be cheaper but also less work too.
out in Ozona, the LO uses the blue plastic barrels (3-4x) in the bed of their truck, fill up the barrel at a water station several miles away, then gravity from truck bed into tote on the ground via water hose.
could also get a 12v bilge pump like for a boat and clip wires onto truck battery for electric pump filling.