Walt a 21" gizzard on Ray Scotts lake few years ago. Here is a few pics on our shad page.
http://lakework.com/photo_gallery/gallery2/v/Fish+ID/Shad/I think there a near neccesity to produce good numbers of bass over 10 lbs. They come with many issues and talk most out of stocking but in the right situation (as Ewest stated) with proper goals they grow some giant bass.