Some help on Crappie but for finding Bream beds it is worth it's weight in gold. You don't need the 360. Get at least a 7 inch and Humminbird is what I have. It takes practice to use it but there are a SL of youtube videos that can really help. For crappie, I use SI to spot brush piles while I am trolling as you can look out left or right for up to 150 feet. For bedding bream, I will ride around at 5 MPH in areas where they usually bed. You can actually see the bed or craters on the screen. If it has a white dot on this bed, you have an active bed. if not, it is an old bed.

May the force be with you.