My son is going through a divorce. The only debt they have left in both
Their names is a boat and she is the primary on the loan. She has hired a bankruptcy lawyer and plans to file in a couple months all while purchasing a new vehicle of approx 30,000 and charging all credit cards to a max. I have ask her to keep the boat out of bankruptcy until I could finance it in my name alone but she said NO that I need to sell the boat to pay it off or the bankruptcy would take it and I would be responsible for the balance due after it being auctioned. I have found a buyer for the boat payoff which is approx. 11,500.00 remaining to be paid. She has informed me that she will not sign for me to sell the boat that she will file bankrupt on it as well. Is there anything I can do to save my credit being my hands are tied?

Make records of all of this, and when she files, appear at the first meeting of creditors and challenge her rights to file. If she charged up on purpose, then it is fraud and she may not be allowed to file.

She if she files can not leave something out, so if she files, the boat has to be included.
At bankruptcy, if the loan is in two names, the other person may have the right to merely take it over, without it being sold, depending on many factors.