I just finished covering a wing half from a H-9 Pulse 60 that was covered with Ultracote. Take a look at there pattern. It was cut on a plot cutter or CNC then attached together to form one piece then ironed onto the plane. I had to do it a bit different but when I was finished you couldn't tell the wing was ever recovered. A few years back I had a glass door I used to make up patterns like the ARFs. I would make up templates, cut the covering, then on the glass I would iron the pieces together then warm and lift the sheet and cover the plane. A lot of work when only doing one plane. I don't know for sure how the ARF manufactures do it but I would think it was/is something along those lines. There is also a how to thread in the Tips forum, a sticky, that is well worth looking at to learn how to do advanced patterns and designs with monocote.