Everything went in so easy on our pool - but then, it doesn't have a single screw outside of the wall bolts and the skimmer bolts, The framework all clips together with a big 1/4 turn vinyl bolt on top therefore, the liner was the hardest part - only because with a 30' round pool, it was a big PIA to try and get the wrinkles out!

The good thing was I had the pad built up and prepped by a neighbour/contractor, and all I did was level/compact the screenings and sand.
It was work, but nothing hard (except physical).