If you not hauling the sprayer anyway then just go a little smaller. I just use a 1000 gal on a gooseneck. Driver has easy get back to the yard and fill water and grab the chemical jugs i need for that load. I hardly ever wait. I do have room on the deck for totes etc. This way if plans change the water hauler can grab different chemical. Or my lunch. Otherwise you are stuck with what your truck rig will hold. Its faster for us roading the sprayer between jobs. Takes an extra person tho. Anyone can haul 1000 gal tho behind a good pickup.