This book In-Fisherman Crappie Wisdom: Handbook of Strategies: Al Lindner: 0053038100037: Amazon.com: Books
I went from a guy who only caught crappie by accident to one who can find them very regularly. If i find myself not catching any, I scan the book (yes I keep a copy in the boat) and move to find them. There are only about 50 pages that matter, and only 2-3 per type of lake you are on/season you are in.