It's just fiberglass and polyester resin with a thin gelcoat, you are dealing with. Once the air is allowed out, it should flex.
Most of the time will be used in the mold/strongbacks making which once your two templates are made, they can be done in a basement. A couple of weeks of evening with your new spindle sander. Wear a dust mask. Ask System Three out of Portland which epoxies they recommend. An old eggbeater hand drill is the perfect tool for drilling the tiny holes for the injection. Big agricultural syringes might be harder to come by.
The repair can easily be done on a weekend, and covered by, get this, a tarp, chuckle.
My neighbor has done a couple of delams under windows on his '08 Fleetwood toy hauler. And has a couple more to do.
We have ORV travel trailer which had 1/32" or less checkerplate on the nose, which I dented. I replaced it with 1/16", and framing behind it. 2 years in ! I had a hard time finding a shop to roll 1/8" so I swapped the 1/8" for 1/16" and got a free roll.
My hunting camper is a stick and tin.
Nash might still be using the mold , so you might ask them for parts. They are just south and east of you in Le Grande . That would do a much nicer job, but it would be more work.
