I carry in one of my compartments a Little Giant ladder. It is a telescoping ladder that you can buy at Home Depot. It is a very strong ladder and you just lean it against the side and you can get on top of your coach. They are aluminum and very strong.
I don't have a rear ladder on my coach either. But they do have special ladders that are for coaches with rear hoods.
2002 Gulf Stream Scenic Cruiser
2018 Buick Envision Essence
Neway Freightliner chassis
Aventa II Blue Ox