Thank you everyone for the replies. Good advice in all of the posts for me to consider.
Answers to some questions that people asked:
The boat appears to be worth around $20,000 based on my limited online research on what similar used boats are being sold for.
The boat’s engine simply broke down. The mechanic who looked at it recommended replacing the entire engine (the $4,000 cost) as he said that the engine was far past its life expectancy. It was just a coincidence that it happened to stop working on the scout trip.
I don’t think there is any interest in selling the