Great initial question by the OP as every time I see a rental, Cruise America anybody?, I think the same thing. Last year DW and I did the west coast of Michigan, beautiful, with our class A and my wife's sister rented a 24' C from CA. She parked it just like all of our observations with out worry. I wonder why companies like CA don't supply the plastic leveling blocks, with a deposit on them of course to ensure their return, and spend 5 minutes explaining the benefit and comfort of a level rig. We drove in the C the sister rented heading into Mackinaw City so we could take our bicycles with us on the ferry to Mackinaw Island. What a piece of junk! The rattles and shakes were incredible on this one year old Four Winds C. To compare that to going down the same road in our class A with cupboards full of dishes and wine glasses and a top counter that the toaster, coffee pot, 12 year old whiskey and salt and pepper shakers ride season long with out nary a noise is amazing in comparison.