Duct tape? I have been told NOT to use duct tape as it will bleed and eventually damage the liner. I believe there is a special tape that does not bleed. I know duct tape does bleed over time in other aps.

The first liner in my pool was put in very well, but it was defective and failed after 10 days. The replacement was under warranty, and so was the installation, but they were local guys and did a HORRIBLE job and it's all wrinkled and you can see lots of footprints at night. I should have made them stop when they kept trying to talk me into vermiculite. I live between hoping I get a lot of years out of the liner, and hoping it will fail so I can replace it. Otherwise the pool is great and I am opening it up for its 4th season.