Just make sure there are no rocks in your shoes when you go up there as the roof membrane is soft and easily cut. I pulled the ladder out of the trailer back wall the only time I have used it and I weigh 230. The dealership screwed it back in and sealed it but I have lost faith in trying it again. I have climbed up many grain bins using the the old rotten wooden ladders attached to the side so I know how to go up a ladder slowly and carefully and not just bounce up the rungs, and it still pulled out of the trailer. I now use my aluminum ladder to gain access to the roof.
Todd & Sheila and kids
2012 Surveyor SV-305
2012 Dodge Ram 1500 4X4 CC Outdoorsman