I've never work in a pool before, want to do the right thing to level the side is unlevel, I know I have to empty the pool to do it, I might have to take a part the unlevel side to work on, what do I need to level the floor on that side, sand? . Early this year the pool only has 24 in of water due to 2 holes, also the cover I had fall down in the pool because of snow storm we had, i just fill up the pool and them patch the holes and I thought lifting the frame on the side where the 4 pool support poles are I placed 2x4 wood under to help level of course not the right way, it doesn't help after filling the pool up. So the question is should I empty the pool by the end of the season and start with the level problem and next year do the liner or do everything next year by spring time. Thanks