I would say that shallow dark bottomed bays with emerging pads would be good. The Channel between the lakes has some good spots. Topwater, Trick Worms, and Super Flukes will go good in these areas.
If there is wind/overcast, spinnerbaits and rattlebaits on the weed flats.
A pattern you might want to try is medium deep running cranks “knocking rocks” along hard bottom areas in 6 to 10 feet.
Sylvia/Twin is great for numbers but catching bigger fish is a challenge. It is a really good lake to learn new techniques on because of the good fish population and abundant structure and cover types.