I have a very large oval above ground pool. On of the wall sections ha rusted through and completely spit apart. Is it poss to repair this? It is too expensive to replace. No rust anywhere else.

How large is the hole? Youcan repair small holes with a sheet of galvanized sheet metal slipped between the pool liner and the stell wall. Unfortunately if your wall has a rust hole more will follow and my fix will last only a season ortwo.