To catch more fish, you need to know where the fish are biting. Use waypoint marking for hot spots so you can easily find your way back. Nobody knows the waters you fish better than you. STRIKER Plus 4 can now store up to 2 million acres of maps with 1 contours. Part of the appeal of this bundle is that it's not just made for the ice. Get a Garmin GT8 or GT15 transducer (each sold separately), and the STRIKER Plus 4 fishfinder works on open water. Where you take your bundle is up to you. But the rugged, portable carrying case lets you easily transport it from hole to hole and season to season.