Has anyone done this? Placed a flat water tank on the storage platform in the crew cab when you may need to have extra water. Use a small pump to transfer to the TC tank when needed. If it was flat...
Our TC tank is 42 gallons and we have two additional 42 gallon tanks in our trailer. We use this additional supply with an inline pump to rinse off off-road vehicles or transfer water to the TC. When dry camping, we try to use the outside shower to avoid filling up the gray tank but also carry 30 gallon gray tote in the trailer.