I need help! I have an old 60x40 gunite pool that I manage. Several years ago it was converted to a liner pool. This was not successful because it has floated and the coping has moved. We are removing the liner and applying Permaflex. Once we removed the liner, we found the corner where the old concrete steps were removed and the hole filled with Pool Krete. Do you have any suggestions what we can fill that hole in with that will stick to Pool Krete in order for us to apply our permaflex and paint? Someone mentioned Fiberglass(Automotive kind) or concrete but they are not sure if it will adhere to Pool krete that stays damp.