I like the simple idea of a header “Li’l Truck Trail Boss”, “Li’l Truck Boss of Trails” or “Li’l Truck Trail Badges” or something designation. Then simple trail name or place name perhaps with difficulty level# badges that can be added like a list below the header badge – whadya think of that idea. I think it will help with the space issues.
I currently am only placing stickers on my inside tailgate area. And some place and country stickers on my driver’s side rear window of my removable top.