I love spring-jigging for deeper-water Great Lakes Walleye. These fish are mostly post-spawn and recovering from their spawning activity. They can be lathargic and their favorite food, baitfish can be sparse.
This is one of the best times to use a high-resolution fishfinder to locate isolated schools of baitfish and jig right below them along the bottom for bottom-hugging Walleye.
This is where the line of Raymarine fishfinders really shine giving me the best detail not only to see the baitfish and any walleye laying on the bottom but to also see my small jig working right along the bottom!