Same problem with the vinyl decals on the doors of our not quite 4 year old Hideout. I peeled of the crackled ones from the back door, the front door is looking OK so far. The doors seem to be fiberglass, whereas the rest is aluminum and the decals stick better. Would be nice to get a custom paint job, but that is probably going to cost more than we paid for the trailer. I guess eventually all the decals will peel off and we will end up with the FEMA-trailer look :B.
I keep telling my wife as the trailer gets older we'll just replace the 'T' in 'Hideout' with an 'S', thus having the first Keystone Hideous!