Just finished repairing a 2 ft x 6 ft section on the front fairing of my 08 Gulfstream . Pulled the corner trim off, pried open the delaminated area, checked to make sure the wood was not totally rotted. Masked off the section under it with painters tape and some poly sheeting ( could have used a heavy coat of wax unremoved also). Mixed up a batch of west system. worked that in with a brush on a stick then spread it well with an old sock on a strip of wood. Made up a weighted pressure clamp with a 2x 12, some staging planks and patio blocks. Sorts propped the 2 by up against the fairing with the planks then added weight. Let it set for 24 hours and it is almost perfect. one wave in an area where the underlayment had already buckled a bit. Very easy , but a bit time consuming. There is a video of someone doing the side of a mobile home, it was over kill, but the general idea is the same . I'll see if I can find it.
Sorry no luck, but there is plenty of advise out there if you search "repairing delaminated rv".