Upper and Lower Otay lakes are good float tube lakes. Upper Otay is next to Lower and its float tubes and shore fishing only, no boats. its much smaller. San Vincente, Lake Murray and Santee lakes are also good.
Upper Otay is fun for the tube but make sure you don't fish bait and you pinch your barbs. It's catch and release only. DFG does a nice job of guarding this place.
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