That’s the type of strap that holds the pop up down and locked. One of my problems is that I am too small to be able to pull on two things at once; do you think these could be pulled separately? Or would they need to be pulled simultaneously?
Depends on the hinge arrangement weight of the roof etc. but their main joy is that you can (instead of clickety click a few mm at a time) get leverage / all your weight on the long end - one central one could well do it
Or just a fitting eye centrally on the back of the roof to which you clip a rope or strap before elevating it - even if you're 50 or 60 kg I'd doubt the struts' lifting force would prevail