Speaking solely on the area south of Palm Drive and between Tennessee road and the power plant: The roads/trails out there are planned roads but never opened/improved. Not really a non-street legal side, although, like you said, lots of ATVs and dirt bikes ride the area. Pressure from the LEOs is hit and miss, but they do stop riders when they patrol. Once they figure out you are on a street legal dual sport they leave you alone. Pay attention to the signs and stay off the FPL property, I work for them and don't have permission to ride on company property!! I ride out there occassionally, its fun riding, but lots of stuff gets dumped out there and I have picked up a few nails. The trails are generally pretty good for riding but can have some thick mud and water in places. On the GSA I tend to shy away from the mud it if seems deep or badly rutted, especially since I am usually riding alone. For a loop on the way home sometimes I like to head straight down 137th Ave, which is the main road south of the racetrack, lots of dips and holes to ride through and/or dodge, ride it down to Card Sound road, then head to Alabama Jacks to blast though the couple of turns and then back up to Homestead on Card Sound road. Its a good place to keep up skills on riding on gravel. When its been raining you will find many big water and mud holes!!! As you can see on google earth there are many interconnecting roads out there, sometimes you can get all the way through, sometimes not. Be careful how deep you go because you can end on a one track with water on either side and a tough turn around!!!!! Don't trust the trail to keep going if you see it start to disappear. I am working long hours right now, so time to ride is hit and miss. If you plan to cruise around out there send me a PM and if I can I will join along.