I also fish a shallow lake and catch numbers of smaller (1lbs) with the robo worm alive shad weightless on a size 3 owner worm hook. I like the black top and blue top alive shad. I use a cheap daiwa 6' light / medium rod with a spinning reel on 6lbs test FC.
I have caught up to 2.5 lbs fish on those alive shads, i usually bust this rig out during the heat of the day when it is slow.