If I were in charge I'd have any nuclear submarines that might be in the IO head down there and start searching for pingers.

The sub is not hampered by heavy weather on the surface so can execute a search pattern at a fair speed as if the seas were calm.(though the sea state would definitely affect the SNR)

But a sub couldn't look for the alleged debris. Just look for the pinger.

Of course Murphy's law might help find the debris as the sub comes to periscope depth and hits it.....