I took my dog and we paddled from the access point inside the Loggy Bayou Wildlife Managment area (bossier parish) to the highway 515 bridge (Red River parish). The first 1/4 of the trip was inside the wildlife managment area and I saw no signs of civilization; was quiet and pretty.
Once the river passes under the highway 71 bridge your on private property which is all cow pastures. Stopping at highway 71 bridge would be a nice 3-4 mile paddle with a easy point to take out. I went way on down to highway 515 bridge which was not as scenic as the first 1/4 of the trip. I saw lots of ducks, squirrels, and beavers - no other people.
I called my wife from the 515 bridge on cell phone and she came and drove me back to my truck. The 515 bridge is not easy to take out at - steep and lots of barbed wire fences with no gates.
Take highway 71 south from Bossier city or north from Coushatta. One mile north of the loggy bayou bridge is the "Levee board road" - take that. Follow Levee Board Road until you get to a fork, go right and follow that until you reach the putin spot (you might need a 4X4 - can be muddy).
River/Creek (Up to Class II)