Sounds as if they were towing the Bayliner behind the houseboat, when they untied it a few of the friends (there were 3 people when I arrived the owner and 2 friends) tried to start the boat, put it in gear and it just didn't move. They then towed the Bayliner in to the beach with a jet ski some nice random person helped them with.

It sounds as if there was no damage to the vessel till they towed it behind the Houseboat because they told me it worked just fine the last 5 days that they were out on Lake Powell.
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