Two days before the Socal rally last week I cleaned and treated the rubber roof on my 06 3600RL. At the rally I checked the roof for any damage due to low hanging oak tree branchs in the rv park, no tree damage. The drivers side nose cone had broken off 4 screw head in the metal/rubber molding attaching the cone to the rubber roof and plywood underlayment. The gap was 14" long and 1/2" high. Fortunately, I caught it when I did, the rubber roof could have pulled back and peeled off in the wind, or flooded the front closet area in rain. I added a additional screws to secure the cone and resealed with caulking.
Might be a good idea to add a roof check to your check list.
Forrest