My buddy had a lake house in Kingsland and we fished it all the time. I'd recommend docks in deeper water for this time of year. We always had luck with wacky rigged senkos or jigs skipped under docks(usually green pumpkin, watermelon red or black/blue). Cranks or spinner baits worked at the edge of docks as well. T-rigged watermelon red baby brush hog was our go to around hydrilla and around docks when senkos or jigs were not working(least weight as possible). If water is calm enough, walking dog style baits around rocks, docks and weed lines.
Caught my PB bass on this lake in a cove under a dock with a wacky rigged watermelon red senko (10.3 lb).
If you're fishing lights. I highly recommend tandem(high-low) 1/4 oz at bottom and 1/8 oz on top white marabou jigs with pink heads. Cast it past the light, wait 3-5 seconds and slowly retrieve while bouncing it(i would start with bounce every second and adjust as needed). Hold on tight to that rod, they hit HARD. as per location, try to stay out on main lake and deep-ish water(we didn't touch anything less than 6 ft).
Note that we mainly fished the upper colorado arms.
Since LBJ is a constant level lake and you're recommending deep docks I have two questions and using the assumption we are talking about the depth at the far end of the dock from the shore. 1) what would you say "average" depth for these are? 2) What would you consider deep? At Tawakoni for example deep might be three feet. On Travis deep may be 63 feet. Thanks!
By deep I meant 10+ft of water. Might not be as deep as some think I suppose.
We fished docks between 10-20 ft. basically docks that are by edge or on channel on main lake.
My buddy's dock started at about 3 ft and at the end it was about 15-18ft. and most docks by his side of the lake were in the same range.
During the spring we spent time mostly around 3-10 ft deep.