This pool is in need of a new liner and a prior pool guy replaced a damaged return line and used an above ground wall fitting. The problem is when you go to change a liner in an above ground you can unscrew the large nut on the back of the assembly (which is now buried) to remove it to install a new liner. You can see how this is a problem now that you can no longer access the nut buried under concrete.
How would you go about making this work for a new liner?
I have a few ideas of my own, but would definitely like to hear some suggestions or ideas.