We recently bought the house with a 30 years old inground pool. The metal rim around the edge of the pool is rusting behind the clips that cover the seams. We would rather not replace it with aluminum because they would have to break and replace the concrete. We sanded it and removed the rust, painted it with rustoleum, but this will only be a temporary solution. Does anyone have ideas on how to actually fix this or cover it up? Thank you.