Fanboy or delavan on a 12v cart. When it fails u can use the fat oy on your rig. Etc
Most pool suppliers have their bulk tanks raised on a cinderblock "shelf" with a containment "tub" around the tank in case of leaks. Then the hose comes off that and is gravity fed into the container of choice. Don't know if this is an option for you but you would never have to worry about a pump taking a dump on you, but you would need a forklift for the totes, or a full truck would have to fill it