Mount fishing electronics with the display at waist-to-shoulder height and the transducer parallel to the water, sealed at every hull penetration.
For the full breakdown, see our best Electronic Fishing Accessories guide.
When a new fishfinder sprays noise at speed or the helm drips after the first rain, the unit usually isn’t the problem—the installation is. Understanding how to mount fishing electronics on your boat as one sequence, display location, transducer position, then sealing and wiring, keeps you from drilling gelcoat twice.
Garmin’s installation