Originally Posted by JimsCAL
If it is a crack in the fiberglass, it will need a proper repair. That meens hauling the boat, grinding out the bad spot, and then laying in multiple layers of glass to restore the hull thickness and strength. Just drilling holes and injecting epoxy is NOT the way to fix something like this below the waterline.
I agree - I am just looking to properly diagnose what is wrong before I do haul the boat and spend weeks on the hard making a repair.