The plan:
Off-road/military style 5ft wide x 11ft long Raindrop/Paddlehead style. I am planning on it being for campgrounds only. The wife is a good sport, but she draws the line at porta-potties. The off-road look is mainly so it doesn't look so tiny behind our full size truck tow vehicles, I have a Silverado and the wife has a crew-cab Titan.
I'd like to thank Paddlehead for being so helpful answering questions and taking so many pictures of his build. My trailer will hopefully be the same shape, but not as complex (hopefully).
The frame is 2" x 2" x 1/8" square around the perimeter and tongue. The braces across the middle are 2 x 2 x 1/8" angle. I built the axle with a stub kit from Northern. The wheels are Cragar Soft 8's in a Jeep pattern and are 15x7.

Somewhere I have earlier pictures, but that was 2 computers and 3 phones ago, if I can find them I will post them.
Here's my slightly overbuilt fender:

It will be covered in diamond plate eventually, I wanted it strong enough to stand on.