It’s tough for sure. The industry has a niche market if people willing and able spend 10k so or more on these off-road trailers. While I totally understand the money and effort I wish more places offered a bare bones option to build upon. I’m super curious about bend trailers and I’m suspicious that they might make CVT’s trailer for them. If that is the case I’m excited if they can add the lid. If not I’m going to build it myself.
As for the pop up. I used to build RV’s back in the day and have owned many over the years. This past year I sold my last one and here I have. I briefly looked at the pop ups offered but typical of the industry, they are built for pavement. Even the off road models are just made to maybe go down a fire road or similar. If that is all you plan to do, it is a good option. Good luck and keep us informed!