I am going to have to say, I 'think' she is right.
I used to live in Houston. My roommate, Scott, dad lived in Rockport Tx. He had a fishing cabin on an island in Goose Island State Park. A hurricane came through and blew the cabin to the pad. Scott's dad was at first not allowed to rebuild because it was a whooping crane refuge. But the sheriff and mayor were allowed to rebuild on the same island the cabin had been on. Whooping cranes would not nest on this island because is was connected to other island that allowed raccoons to get to the nests.
He finally got to rebuild and we did it right. It took us a year of weekends to build it back bigger and better. Caught rain water, even dug a septic system. This island had been made of shucked oyster shells from a 100 years of oyster packing, serious.
We fished constantly, BUT there was one island NO ONE could even get close too. If you fished and got within a 1/4 mile, out came boats and guys with guns saying you were too close. They looked over your boat and then made you get farther away. This happened MANY times because we would just follow bait fish when speckled trout fishing.
The guys on the boat got to know us so well they would pull up and yell, 'To Close', and we moved away. Dusk, dawn, day night they would come. The island belonged to the Bass family. If you are looking, it is about half way between Corpus and Houston. It also had a landing strip because jets would land there all the time, flew right over our cabin on landing approaches.