About 3 years ago, I purchased a folding ladder from Camping World and it was a great investment. The ladder is 7' tall and when folded it is about 4 square inches. I have not seen it anyplace else but might be available at some other retail or on-line site. A little pricey but for me--worth every penny.
It fits very easily in my storeage bay. Takes about one minute to set up or take down. I am 6" tall and with this can reach just about anything. Also weight about 250 and supports me just fine.
Hers's the link if interested: 7' Double-Sided Rung Ladder - GP Logistics SLD-D7 - Ladders - Camping World
Hope that helps.
Bob the "Newbie" to the forum