Humminbird Side Imaging has, without a doubt in my mind, made me a far more successful angler over the past 2-3 years....particularly with respect to crappies. Check out these articles to see how I apply Humminbird Side Imaging (and Down Imaging, and Dual-Beam 2D sonar) to a variety of crappie-fishing situations:

Using Humminbird sonar to stay with roving late summer crappies

Mid-summer panfish revealed by Humminbird Down Imaging

Finding summer crappie with Humminbird Side Imaging and VMC jigs

Targeting spring panfish with Humminbird Side Imaging

Aquatic weed identification using Humminbird Side Imaging