The water drained out of my pool over the winter. A pool company installed a new liner. They told me I have a vermiculite bottom and that they would smoth it out before putting the liner in. I got in the pool a few days after they were finished installing the new liner. I found numerous lumps and sharp protrusions underneath the liner as I walked around the pool. I went back to the company and they told me that the the floor was pretty damaged and that they didn't think I wanted to spend an extra grand to get a new floor; that they smoothed it out as much as possible. My concern is that this new liner will not last due to the protrusions that I feel with my feet that are sharp. In addtion, the pool co. told me that they may be able to smooth some of the lumps out. If anyone has any infor that they can share or advice, I would greatly appreciate it.