Stumbled onto this guy on youtube the other week. He built his own pop-up shell-style camper for his Tacoma. His idea can also be adapted to a rooftop tent. He used 80-20 extruded aluminum for the frame and some heavy-duty canvas detailed in his video that's much stronger than your standard tent material. It really interested me because of the no weld no sew aspect of it. So I figured I would share it so you guys can see if this works for you!