As I haven't seen you yet, welcome to the forum!

Aylad has you covered with the possibilities - is the liner puckered in small areas or more like a spider's web in the shallow end, leading towards the deep?

I've been doing IG liner pools almost exclusively for the past 10 seasons and don't mind sharing the tips and tricks I've picked up

It's GREAT to see other pool dudes come here to try to perfect their mastery of pools!