Oconee is my favorite lake by far! Oconee and Sinclair fish pretty much the same. All year long your going to have a strong dock pattern. Sinclair doesn't really have many deep water spots and Oconee has a few, but first, get a feel for how the dock fish work and get your skipping dialed in.
When I fish either lake, I like rows of docks with deep water nearby, especially if it's a channel swing that comes up next to the outside posts.
Sunny days: Have jigs and shakyheads tied on with different weights. Throw to all the posts, ladders, boatslips, etc on the outside and then after you have hit the edges, start skipping your bait underneath the dock. Within an hour or two, you can pretty much narrow it down to which spot on a dock they will be on and you can pull up to a dock, throw to that spot, and move on.
Cloudy/windy/rainy days: Have spinnerbaits, crankbaits, and buzzbaits tied on. When the sun is covered up, fish at Oconee and Sinclair like to roam on the edges and in between the docks. Throw your baits down the edge of the dock then hit all the water between the docks. If you hit a stump or brushpile, make multiple casts to that area.
If you do this, you should be able to increase your catch. My favorite soft plastics on Oconee and Sinclair is the *** Finesse worm and the Zoom Ultravibe Speed worm. For jigs, I like the Spro K-Finesse jig and the Gmans jig. As for the hardbaits, just about any will do as long as you aren't running any deeper than 6ft or so, but I personally use the Spro Aruku Shad and the Spro Little John. Also, make sure you have the chartreuse JJ's Magic with you because both of the lakes can get real muddy and it will help the fish find it a bit easier.
Good luck dude