When to cut skimmer holes in new liner installation

[MikeyVortex]

Got my new liner recently installed in a 15x30 above ground and currently filling up the pool and it's about halfway full so I was curious when is the right time to add the skimmer and return and cut the openings out of the liner? I know as the pool fills it stretches the liner more and more into place so I didn't want to cut too early and cause anymore liner fitment issues. Should I do it when water is just below the return and skimmer openings or sooner?
Thanks.

 

[kimkats]

An above ground skimmer installation can be done anytime the water has pushed the liner against the wall of the pool and the liner is smooth. If you want to wait until the water is just under the skimmer opening that's fine also.