Ok so here's my issue, the account has an oooooold fiberglass panel inground pool probably 14x30 with a short 3.5' shallow end and a huge transition to a 12' deep end. The main drain is busted and customer doesn't want to mess with that "ATM" but that's causing circulation issues. When I was brought on to this pool I was told it can't be drained or the walls will collapse in. They desperately need it drained and probably a good acid was or power washing. How can I support the walls long enough to drain clean and refill it?