I use my 987cSI Hummingbird. I can clearly see bluegill beds from 100 feet away. It has been the best investment I have ever made. I found over 20 groups of beds this past weekend at KY lake. I kept about 50 eaters and threw back the biggest for spawners. Probably the best day of bluegill fishing I have ever had. Total was well over 200 for 6 hrs of fishing, two of us in the boat.
Chris