I mean no disrespect to Scamp,
Boler, or any other brand that adheres to that form factor, but if you want a flat spot where the windows are, sell you trailer and buy an old
Trillium. All the windows, even the one in the door, (in later models) are mounted on a flat surface.
Joe Thoen built several concession
Trillium 1300's. The back and side windows were hinged at the top and opened up and out to provide a small
awning for the customers. There was a bulkhead across the trailer, where the closet and kitchen would have been, and the stock room was ahead of that bulkhead. The door for the trailer opened into the stock room. There was also four flood
lights, in a row, on the top of the trailer, above the rear opening window.
One of them was
for sale, a couple of years ago, in Alberta for a long time. It was not very expensive.