Wow! George T, your's not only pops up, it pops OUT! Good job on that one

!! I've decided to poop can the "clamshell" idea and go with a rounded simple with a flat back and a door in the rear, also. 8'L X 5' W X 4' T......... small closets on each side of the rear door and an elevated floor so it will overhang the tires and provide me the width I need to put in a full mattress that's 54" wide. I wanted to make a small 4x6 camper because I'm only 5'2" and my GF is 5'3" but her dog seems to think she can only sleep against the grain

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Oh well, from all the banter about the sizes of trailers to build, I'll be happier with a bigger one anyway. My head is hurting from all the thinking about how I want to build mine, time for some of this.............

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Thanks for all the replys, guys!!