From your two posts, I suspect you bought too much trailer for your tow vehicle, and now you're trying to figure out how to not have to invest in a more suitable tow vehicle.
Your Cedar Creek 36CKTS has a GVWR of 15,402, and you should count on it grossing at least 15,000 when wet and loaded on the road for your third RV trip. Pin weight is probably going to be 17 to 20 percent of gross trailer weight, or 2,550 to 3,000 pounds, regardless of where the fresh water tank is located.
So if your tow vehicle doesn't have at least 2,550 pounds of unused payload capacity for hitch weight, you're probably going to be overloaded. If buying a new tow vehicle, I'd get one that has at least 3,000 pounds of unused payload capacity when wet and loaded for the road, including passengers, pets, toolbox full of tools, bedliner, floor jack and jackpad, 5er hitch, and any other options you have on the truck.