Now that I've got a bunch of TrailTop parts molded, this post is just thinking out loud... if the TrailTop system were to become a commercial product, "parts kits" for specific shapes/sizes of TrailTops could be offered. Here are three different style TrailTops for Jeep-tub trailers, along with the set of TrailTop framing parts necessary to build the top. (The straight pieces in these photos aren't necessarily the proper length for each particular design, I've just reused the same straight parts in each photo for illustration purposes).
Each kit could come with plans and instructions showing how to assemble and complete the specific model the kit was for.
Also, kits could be made with longer straight pieces for assembling trailers without Jeep-tub bases, like this one on a Harbor Freight frame I've posted before...
And for builders with their own designs in mind, the TrailTop parts could be sold individually so you could buy whatever you needed to implement your particular design.
Of course this is all just thinking out loud, because I do this as a hobby - I'm not in business to sell anything, nor do I plan to be. If these "kits" were to be sold, some company would have to sign up to market them, it wouldn't be me.