Thanks for finding the chart (#11518) David. I had a good look at those breakwaters in both the video and on the chart. There is another channel that enters the breakwaters on the south side much closer to shore near a 'submerged jetty' that they might have been trying to find but it is obviously too early to even speculate (per Swat) how these folks ruined a boat roughly valued at $600K because they had no $40 paper
charts of the area and were using either a chart plotter or intuition instead. Most likely they would have been heading south but we will have to wait for more of the sordid details.
Another free resource these folks could have used is the Coastal Pilot downloads that give the mariner a detailed description of each inlet.
It sounds like they put a pretty sizable hole in the boat and gave up the idea of trying to fother it (v. t. 1. To stop (a leak in a ship at sea) by drawing under its bottom a thrummed sail, so that the pressure of the water may force it into the crack.)
Quite sad for the owners but good business for the salvors.