I've been searching, and procrastinating... I'm building a 3 rail trailer, can't find what I'm looking for. I've got the 3 rail part figured, but I'm going to build on a 60" axle instead of the typical 48" and use 15" wheels. Rather than build a 48" wide frame and add extensions for tie downs, I'll just build the box that wide, and save my shins. I'd like a platform area up front as well, unlike the commercially available ones, as I need to carry more than just a spare and a gas can. I'm thinking a 48" truck box, fuel and propane tank holders, and a space for my 1500 watt generator, and my canopy/lawn chairs. Stuff I don't want in the RV. I've looked at the enclosed trailer options, and I've decided against that, for some reason, they cost the earth up this way, even for a well used one, and my desire to use it behind my car for day trips. Let's see those custom open trailers!