I was down there last summer for the 1st time in about 15 years. I always remembered fishing in the Nature Preserve Ponds and catching tons of largemouth and bluegill/shellcrackers. I tried it again and the same fish are still there but they are much, much bigger. And for that matter, so are gators that inhabit the ponds
We were using traditional tackle (aka Bass Tackle from the Dark Side) because I didn't have my fly rod and caught several large largemouth. My biggest was 9 LBs. I caught it on a popper. When I go this year, I'll have an 8wt with me. Any fly that pops and or looks like a like a minnow will catch fish. A guy from Louisville, KY was there that morning also (it was Memorial Day) and caught 3 fish over 6lbs and lost one that was well over 10lbs.
The best part of the deal is that hardly anyone fishes those ponds. If you go, be sure to fish the pond that has the little 'Gator boat in it. I has the most cover in the water with weeds and what not. It also has, as evidenced by the tour boat, the biggest gators. So, when you go to land a fish, I would advise not reaching down and lipping the fish. Just drag it up the bank a little ways to avoid any unpleasant encounters and earning the nickname of Lefty! Flyfishing already has a guy with that name.
Just ask anyone down there where the Nature Preserve is. It's real easy to find. Have fun.