Amish? Is that why I have a electric fireplace in my Jayco?? hahahaha... Seriously though, that dang thing puts out some serious heat!.
BigNasty... I was thinking the same thing... my 298RES living area measures just slightly under 30ft. long... bumper to hitch pin measures 33 and change...
Do the 5ers measure just the box or to the pin? Maybe this varies between manufacturers???
Perhaps RV manufacturers have quietly moved from the old tried and true measurement method Bill explained to wishful thinking or estimates. The measurement method Bill wrote of was the industry standard for many years. I moved on to fivers several years ago and haven't paid that much attention to conventional travel trailers so the number in the model designation may not be accurate any longer.
Regardless of that, I cannot think of any advantages that do not go to the fifthwheel travel trailer except purchase price, weight, and height.