I am getting rid of my skimmer this year, it was a craigslist purchase originally and it has had issue after issue. I have removed the skimmer but now I have about an 18in x 10in hold in my liner where my skimmer was. What is the best way to patch this? New EPDM + silicone + liner tape on both sides still leaks! Should I just fill dirt in behind it to raise the liner, or just replace the whole pond liner? Help!