I do have a built in hose storage built in RV. It holds 15 ft, without connectors. I keep extra hose in a plastic container in very front bin. I don't keep black tank supplies in same bin as clean supplies. The other bin in front cabinet, has a couple of other hoses, and odds and ends hose fittings. On my last trailer I bought a long tube made for holding a hose with ends left on. It was long, and had to be bolted to underbelly of RV. It worked ok, but very hard to get too. It was too long to mount it across RV so had to mount it long ways. I do use the Rhino hoses, and not too hard to take fittings off and on.