Last year was extremely odd for Oklahoma and Texas lakes. We went from winter to summer, skipping spring. I'm not sure the fish recovered all year. At Lake Fork, there is a great situation for spring setting up. Lake is full, and some grass is already growing.
I would advise everyone this: Right now, spend a good amount of time in 4 to 6 ft of water, temperature be damned. I have caught many, many big bass on Fork winding a 3/4 oz red or orange trap in 4 ft of water, close to a ditch or creek, but shallow! The wife caught her ladies record on McGee Creek 2 years ago Jan 25th in 3ft of water on a Biffle Bug. Water temp? 49.
The old adage of big bass spawn first is absolutely a fact. If you're waiting on 55 or above water to go fishing, you're missing the giants. Those beds you see in April were used by the big girls in Jan-Feb.