Hello. Have a used 15'x42" Polygroup, Summer Escapes Metal Frame Pool. Have base level, sand and tarp. Finished pool setup but, rain came before I could get it smoothed out. There's a little rainwater under the pool. Can I continue filling or do I need to wait? Water was too heavy to lift so, I pumped out the rainwater and stretched pool out but, pool still has permanent wrinkles in the bottom also a couple of bleach white looking white spots. Not sure why. Has anyone seen this before? Any help as to what I should do next is greatly appreciated.