So as the title says I'm looking for input on a design. I have a large truck with a 16 foot flatbed body. Within the next few weeks I will be putting some equipment on the back of it and welding/bolting it down. The equipment has protection from the elements, however, to be on the safe side I want to put a canopy over the bed. Has anyone ever seen or done anything like this? The kicker is that I don't want sides, just the canopy. Obviously it will have to be sturdy to keep it from flying off when I'm driving down the road. I would either go with a thin metal for the top or some sort of canvas that could be removed if needed. I'm kind of stuck on what to do, I do have some welding skills but I've never done anything this large, however, I'm also on a budget. I've looked all over the internet for something similar but haven't had much luck. I'm thinking about something like the pictures below.
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