[WildJohn]

there is a commercial hook system that lets you hang chairs (and maybe a bike?) from the ladder.
you can go to a hardware store and get bicycle hanging hooks intended to be mounted on the wall of the garage and clamp them to the ladder with hose clamps also.. just hang one bike by the front wheel from a high rung of the ladder.. I don't know if that would work but it sounds good... worth looking at.. I am going to have to figure out how to mount our new tandem( that is spelled bicycle built for two) somewhere.. it is 8 ft long so the options are limited..

Happy camping... all the time
John