From an earlier post, I have an UnderCover Flex, aluminum tri-fold. I also tow a travel trailer (29RKS). It was important to me to be able to open the cover from either side of the truck and fold it .....I did not want to have to move to the other side of the truck to either unlatch (as with most soft covers) or roll up the cover. As for "stuff" stored up next to the cab, I use an expandable aluminum docking pole with a boat hook on the end, and easily "snag" whatever it might be that I need.
2018 Ford F-250 Lariat, 4X4, 6.7L PSD, SC, SB