Here ya go, you can zoom in/out. But it doesn't show all the reefs. But you can get an idea of some of the size and where. Make sure to pick up Erie's triangle guide to better fishing at one of the tackle shops when your down there. I have one on the wall ( large size) and a smaller one I keep in the boat. Very handy and they show what your requesting w/ waypoint #. When you hear chatter on the radio you can look to see where folks are at. There are 10 reefs in the range zone alone.
http://www.charts.noaa.gov/OnLineViewer/14820.shtml