When I was a full time installer my boss actually liked me so I didn't do any full coverage - full coro trailers thankfully. I did have to do a lot of cut graphic stuff on them or partial coverage guys like this. We squeegee'd and brushed the corrugations in which sucked balls. You had to start each panel on the exact same corrugation so they layed in and lined up down the sides. Squeegee the top of the corro, turn the edge with your thumb, brush the middle in, turn the next side with your thumb, and on to the next one...
Mind numbing work at best.