Commanders!
True, most American heavy tanks are made for hull-down tactics. But every rule needs an exception. That exception is the Chrysler K. Aboard this Tier VIII beast, you can forget hull-down and switch for side-scraping techniques, using the best of your tough armour. Just angle the tank properly, and you'll be able to withstand fire for hours. But if danger comes close, just use your strong power engine to move to the next position, and hold your ground once again!