The sloped portions of our pool bottom are somewhat rough, wavy, and pitted. My pool is a inground with a vinyl liner, sport bottom, with a concrete bottom under the liner. The flat areas of the bottom (two shallow ends, and bottom of hopper) are glassy smooth, but the slopes are not smooth, and are visible, particulary at night with the light on. I'm prepping to put in a new 30 mil liner next week, and I'm curious if anyone has a suggestion on how I could smooth out the hopper slopes? Thanks! Brad.