You shouldn't be relying on the current track to get home. Set up known waypoints that you can navigate with - channel entrances, etc. Your gps should have a function equivalent to "GO TO" that you can use to show the path to that waypoint. That way you're relying on known, stored information, rather than a current track that might get erased.
And even with GPS, you should always know what compass bearing home is at, in case your boat GPS fails completely. Suppose you head out of Galveston or Freeport on a bearing of 135 degrees to get to your fishing spots. Then you know that your return heading has to be 315 degrees. It may not get you smack on the nose to the Galveston jetties, but once you get close enough to shore, you can probably use your phone as a backup GPS to get where you need to be.
"Decency is not news; it is buried in the obituaries --but it is a force stronger than crime" ~ Robert A. Heinlein, 1952
I can't give legal advice yet, but this site may have some of the answers you need: https://texaslawhelp.org/