I have fished that pond by Hawaiian Falls three times, and have been shut out so far. It is fishy looking, but I don't believe there are many fish in there. Not sure about the pond on Las Vegas Trail.
Try the water hazards on the old Z-Boaz golf course. It's now a city park, located across the road from the Goodwill store on Camp Bowie. There are a few bass, a few more channel cats, a lots of perch. Good place to practice with the fly rod. Lots of room and hungry perch.