Find bottom-hardness transitions to find and catch fish

Glorvigen Crappie Screengrab

Scott Glorvigen, wired2fish.com

One key to consistently finding and catching big fish is locating hard- to soft-bottom transition zones on the lake bottom. “Because that’s where the food is,” says professional fisherman Scott Glorvigen, of wired2fish.com.

“Soft-bottom areas are home to invertabrates that make up the base of the food chain,” he explains.

To locate transitions from hard to soft bottoms, Glorvigen uses Insight Genesis, the online Lowrance service that creates custom lake maps from sonar signals recorded from the transducer on your boat.

“This is where custom mapping comes in,” Glorvigen says. While many other lake maps “only show part of the underwater world,” he explains, “Insight Genesis combines customizable, high-definition contours with bottom hardness and vegetation layers.”

While many other lake maps “only show part of the underwater world,” he explains, “Insight Genesis combines customizable, high-definition contours with bottom hardness and vegetation layers.”

And custom Insight Genesis maps are easy to make.

“Simply record a sonar log to any standard SD or micro-SD card, upload the data from a PC to the Insight Genesis web service, and receive your map,” Glorvigen instructs. Then download your map to an SD card and insert it in your Lowrance GPS/sonar unit to see where your boat is in relationship to the bottom-hardness transition zones. This makes it very easy to line up the perfect cast.

“Prepare to cash in!” Glorvigen says.

Get more great fishing tips at wired2fish.com.

Watch the video below to see Glorvigen demonstrate how to use Insight Genesis to locate hard- to soft-bottom areas.

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