So I built the trailer out of a Tacoma bed… Originally I put a rooftop tent on a rack, and then bought the aluminum shell and put a platform inside for a bed. I like the aluminum shell because it seems to be more airtight, but of course it is more bulky and has more air drag when I tow it. Thinking of making a lid and putting the roof top tent back on. Anyone have any experience having had both of these options? Preferences?