Pretty close. Just down the road. I think my guides office was in deep creek. Your right about the car hood. They where 235 feet deep which is crazy. I thought how they pulled up there anchors with an orange buoy is really interesting. I'm guessing there is not many snags down there.
Come up to Ketchikan with me next year around late August/early September. I do deep dropping for sablefish up there at 1,200+ feet.
Have been learning to target halibut in shallower water when possible, say 120 to 180 feet, but yeah, mid 200's is typical up there. At least in SE Alaska you can hit bottom with a 12 ounce jig rather than using those monster weights you had.
*edit* Yeah, there's snags up there. Ideally, the anchor buoy pulls your anchor almost straight up off the bottom while the boat is pulling forward. But sometimes, the current has other ideas.
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I can't give legal advice yet, but this site may have some of the answers you need: https://texaslawhelp.org/