Crayfish do spend a lot of their adult lives around rocks but they spend alot of their lives relating to clay banks during the mating periods and when the young are being carried by the female. During this time most crayfish molt and shed the outer skeleton because they are in the growth cycle into adulthood. At that time during the molting period they emit a scent that tells the bass that the crayfish are moltling and are in their soft shell period and a bass cannot resist the thought of passing up and opportunity to get some soft shell crayfish so bass will travel a long ways to find the clay banks with the crayfish communities in them during this period. I have 5 clay banks that I watch religiously for the molting periods on Old Hickory Lake.
Now for the sticking around here and learning more about catching fish........
Make sure you read posts from guys that actually catch fish in that area. Fish are the same everywhere but fishing is not the same everywhere and I am 500 miles away. I can use my same general knowledge to come there and catch fish but not at the same consistancy as the guys that live there so you can use my subjects as a basic research but make sure you listen to the locals and then interphase it in to what my research explains.