liner leaks

I have a 24' circular Intex XTR above ground pool. I slightly underestimated the amount of sand I'd need to build a pad under the liner this year. Just guessing, I'd say the sand pad is an inch or two undersized causing a slight overhang of the pool liner all the way around. See attached images...

I have a 20,000 gallon above ground pool. It is installed on top of a Gorilla Pad, which is directly on top of the ground. In 2020, we had a large number of pinholes in our liner (dozens of them) and it was suggested that I damaged the liner with too much chlorine. (I was trying to get rid of...