In 1-2 miles you will see Hurlburt Rd. Turn left onto Hurlburt Rd. and continue to the Green River. The swimming hole is near here. No better directions available. There's a big open field with cows on the north side of the road, and a big cornfield on the south side.
MANY cars are parked on both sides of the road in the summer, so it's easy to find.
There is a popular pool right near the parking lot but a more isolated one a bit upstream with sandy beaches. A major falls, with a gorge at the bottom with several large pools. Continue walking on this road, it will go down to a creek, cross it, then go up again. Round trip, the hike is 2.5-3.5 miles. 5 mile to the trailer park and take the dirt road on the left.