check this link:
http://www.wildflorida.org/hunting/wma/South_Region/Holey_Land-web.pdfShows a map and has other info about the area.
The road is on the west side of US 27 on the Broward/ Palm Beach County line , it goes west for approximately 15 miles i believe and you'll see a pump station on the end , somebody correct me if I'm wrong.
There should still be a sign by the road .