Roger, Roger.
My understanding of what a camper is a bit different. It's not there to be
Dark Aero, it's there to provide living space. You want it to provide as much of that as you need while hurting driving efficiency as little as possible by minimizing size, weight and drag. The number (and type) of people you're bringing dictates the size you need, which goes a long way to dictating weight. With any size bigger than a coffin, aero drag is going to be huge and the best thing is to admit it and just try to not make it worse than it has to be.
You can compromise on living space for the sake of aerodynamics, but it really only carries so far. Something from
Little Guy like their MyPod B@sic is a pretty extreme version of this and while there's plenty of room for aero improvement, it's a camper. Boattailing it would add usable space, it would get used and then it would weigh more. For more than one (or two
very friendly people) or anyone who has to spend any time inside, one of
Safari Condo's smaller offerings is still pretty extreme.
My answer was a pop-up. We sleep four. We can have stuff inside and are capable of cooking real meals and even eating them inside. It collapses for travel, tucking mostly behind our minivan, and being collapsible means most of the walls are lightweight fabric. We didn't get it because we wanted to spend time inside it, but we wanted to be able to. When we have to set up and get the kids fed when it's dark and raining, this manages:
When you consider that, the fact that it mostly tucks behind our minivan is amazing!
Maybe something like a boattail/kammback out of coroplast and duct tape would help, but I've never felt the need to add gear and steps to the setup and takedown. Of course, a coroplast tail could ride on top of the slide out bed extension while it's set up...
