This will be difficult.
On the (recent) market, one sold
in Ft. Lauderdale in September 2020 for $97,000, the new owner barely squeeked ahead of the Covid sales craziness, as he had already put in and had his offer accepted mid-Summer.
Another beautifully appointed P31, lying Charleston, SC, sold
in the Fall 2020 for $125-130,000...
Have you tried yards like Green Cove Springs where boats go to die? You may find a project
Best of luck with your search,