Does anyone know the damage a weed eater can cause to a above ground pool wall and liner. I believe this is what happened to my pool wall?

I have personally experienced the damage you are talking about. I got too close my pool with my weeder and it put 5 holes along the side. I had to replace my entire pool walls and liner. I sugggest that you put white rocks or mulch around your pool, it helps to prevent this from happening. Good luck.