I haven't fished the yak much recently but when the waters cool off I like putting in at Shady Shores and drifting around. Caught me a 30lber out there this spring. Its mostly a 14-16ft flat, with a few areas to focus on. Recently we've been in deeper water though.
Make sure and bungee or secure your rods to your kayak somehow or you may lose a setup!
Loc: Copper Canyon, Texas, USA
Lake Park would be a good area to launch and drift when the boat traffic is light. Some good blues can be caught not far from the shore in that area. Drift south from the dam along the ledges and river channel. You can also drift some humps in that area as well.