McBrian's Lake, you just follow Golden Grove Road to Upper Golden Grove, until you see a dirt road on the right hand side called "Sands Road", drive down the dirt road and you'll see plenty of open space on the right hand side.
I live on Hunter Lake, and it's really all private.
1st Lake you can fish from many places. Travel Loch Lomand Road, and before the Barnesville / St. Martin's split, you'll see a bridge. Park at the little dirt spot, on the left hand side, and you'll see trails. Follow those, to plenty of spots. You can also go down the Barnesville road (off of Loch Lomand Road), and you'll see open places to fish there aswell. Another good spot, is to drive until you reach "Baxter's Corner Store', just after the store (immediately), you will see a road called 'Sands Road', (this is the other side of McBrian's Sands Road, but the two no longer connect, washed out), and you can fish all along there.
2nd Lake, follow Barnesville Road until you see "2nd Lake Road" on the left hand side. Turn down 2nd lake road, you'll see plenty of open space on the left hand side, shortly after turning down the road.
For 3rd Lake, you can turn down 2nd Lake road, then on the right hand side, you'll see "3rd Lake Road". Drive down 3rd Lake Road, until you reach some small, open areas on the Right Hand side.
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I have lived on 3rd Lake, Douglas Lake & now Hunter Lake. Any more questions, or for more detailed directions. Feel free to ask.