Refilling fresh water tank when dry camping

I also do not have a gravity fill. I rarely stay in the same spot for more than a week but if I do and need water I have 2 overflow hoses and use one with a 3 or 5 gallon water jug that I hang of the side of the MH. I also have a old Sure Flow pump set up that I tried in my driveway and it works well but have yet to use it camping. It is easier to just slide the overflow tube in an upright position and insert another tube from the 3 gallon shower and fill.