The thought has crossed my mind to attempt to build a rock/ rubble pile and eventually cover it with 3 and 10 hole blocks. Granted it will take some time, but eventually should be doable. Has anyone else had any experience trying this? We hope to drag our local Corps of Engineers Office in on this as they are going to try to extend our local Marina breakwater soon. Thoughts or ideas? Would like to know how much crappies hang around transition zones...