Grab rails inside? Depending on location, Cobra anchors, anchor a run of 1x4 where you want to bolt, or bolt through the wall...
I'm sure others will come along with better ideas.
I'm sure others will come along with better ideas.
This is my biggest concernMany of those older mobile homes have 2 x 2 studs on interior walls, and 2 x 4 on the exterior walls.