I have an above ground pool that has a 4" rust spot at the bottom of my side wall that is getting soft. It is below the skimmer. So, here is what I am thinking of doing. Drain the pool, leaving the skimmer attached. Pull liner back far enough to get to the rust spot, cllean up rust spot, epoxy a piece of galvanized metal to sit over the rust spot between the liner and the pool wall. Fill the pool back. I then need to replace my my skimmer. I am trying to not replace my liner since it's only about 4 yrs old. Does this sound like it will work? I was thinking if I left the skimmer attached everything would line back up.