I used to have a camp there and caught trolling the grass lines at this time of year. Going north from the park there should be a good grass line outside of Bass Haven, one past Rock Island in front of Toledo Bend Resort, another starting at Red's point going north toward Pirate's Cove, and the outside of the north island at the mouth of Pirate's Cove. This time of year I trolled 1/16 oz Roadrunners in about 20-24 foot depths at about 1 1/2 MPH. I always tipped them with the Berkley Gulp 1" minnow in chartreuse. There are 3 artificial reefs near the park. One is near the launch, one is in the WLF cove near the spillway, and one is off the end of the underwater ledge near the spillway. All are marked with yellow buoys.
Good luck.
"The time a man spends fishing is not subtracted from his allotted time on Earth."