If you don't want to go that far, Lake Worth has been producing some good numbers in the cuts off of the main lake. If you just want your nephew to catch some fish, the sandies are usually schooling this time of year around the hump just east of the 820 bridge, so a roadrunner might be a good bet. If you take some worms or minnows, you can catch some sunfish and maybe a catfish or two.
Manta Ray 14
Florida Native by Birth, Texan by Choice