I'm not opposed to a single slide.I just want to make sure we are getting a vast more amount of room if we do make the change.Our bigfoot has done us incredibly well.Is the AF 990 usable with the slide in? I see on the new ones the have a domed roof to help with leaks I'd assume.One thing I wonder is if Bigfoot made the campers any wider over the years.Ours is a 99 and has every single option the offered including dual pain windows it even has 3 porch lights.It however is a bit a challenge to load on our Dually Ram.If the new ones are even a few inches wider I'm sure it would make a huge difference.