Topper/Lid skin?

[lilgription]

Hey guys. I'm wanting to build a camper shell / top style for my trailer. I plan on the skeleton construction being 1x1 mild steel tubing. I'm wanting this to be able to be removed much like a truck shell. Yeah I know what you're gonna say. But a fiberglass topper. Lol. Should've thought of that when I built my trailer. It's only got a bed 50" wide inside. There's the problem. I can get any steel I want very cheap. I'm wanting this fairly light similar to a truck topper and trying to do this as cheaply as far as material costs as I can. What's my best option to skin this thing. I'm wanting it to resemble a military trailer topper. Any help is appreciated

 

[1store]

lilgription .Do you have a picture of what the military trailer topper that you want looks like. Just saying a military trailer topper levees a lot of opens. If it's flat the kit I am using fo the bottom of my clamshell tent is a fiberglass ring. that you can infill with plywood,steel, aluminum . you could start with wood. Then when you find that Diamond Plate for free you can replace it .Have you look at the outer ring at trailer supply .

 

[lilgription]

Something real similar to this but no where near as tall. Lol

 

[lilgription]

Love this one as well