leaving pool empty and laying down

[CarlD]

An empty AG round pool empty? Without the water inside you really are risking it collapsing in on itself.

[Charlie_R]

Is it an Intex pool with poles or is it a hard side AG?

That will make a huge difference. However, If it is an Intex, you would be better advised to fold/roll the completely dried unit and store it in a container secured against critter entry.

Of hard side pools, I know not.