By August, most walleye have packed up and moved to the deep stuff. The shallow weed edges and rocky points that produced in June are mostly holding baitfish scraps now, while the real fish — the ones worth bragging about — are stacked over mid-lake humps, deep points, and basin edges in 18 to 35 feet of water. If you're still fishing shallow out of habit, you're probably fishing right past them.
Here's how to find those fish and put a crankbait in front of them without spooking the whole school.
Why Walleye Go Deep in August
Warm surface water pushes oxygen and comfortable temperatures down into the thermocline, and baitfish (and the walleye that eat them) follow. Deep structure near that thermocline — humps that top out around 20-25 feet, long tapering points, or the edges of a deep basin — becomes a highway. Walleye will sit on these spots and ambush passing bait rather than chase it around open water, which makes trolling a controlled path over structure one of the most efficient ways to cover water and stay in the zone.
Reading the Structure Before You Troll
Idle over a likely spot first and watch your electronics. You're looking for a hard bottom transition, a subtle break, or bait balls hovering just above the structure. Walleye often sit slightly below or beside the bait, not right in the middle of it. Mark two or three of these spots and plan a trolling pass that clips the edge of each one rather than running straight over the top — fish on structure tend to spook off a boat passing directly overhead.
Line and Leader Setup That Won't Spook Deep Fish
Clear, deep water in August means walleye get line-shy fast. A lot of anglers lose fish simply because their leader is too visible or their knot fails under the constant pull of trolling. A stretch of reliable 30lb Monofilament Fishing Line as your main line gives you the low-stretch backbone to feel a strike at depth, while running a length of Nova 100M Fluorocarbon Sinking Leader Line ahead of your crankbait keeps things nearly invisible in that clear, deep water. Fluorocarbon also sinks, which helps your bait get down to depth faster instead of riding up in the water column.
Connect your leader to the mainline with a small, smooth-turning swivel — a bulk pack of Nova Bearing Swivels is cheap insurance against line twist, which is a real problem when you're dragging a crankbait behind the boat for hours at a time. Twisted line loses feel and eventually weakens right at the connection, usually right when a good fish decides to hit.
Dialing In Depth and Speed
Most deep-diving crankbaits are rated to reach a certain depth at a certain trolling speed, and that relationship matters more in August than any other month. Too fast and your bait rides high, right over the fishes' heads. Too slow and it loses action. A good starting point is 1.5 to 2.2 mph, adjusted until your electronics show the bait ticking just above the structure you marked earlier. Small speed changes of even 0.2 mph can turn a dead pass into a triple hookup, so don't be afraid to experiment once you're marked over fish.
Fishing the Early and Late Light Windows
Even though walleye are deep, they still feed harder during low light. Dawn and dusk passes over your best structure will consistently outproduce the middle of the day. If you're stretching your trolling into that first hint of daylight or the last light before dark, a Rod Tip Bite Alert Light clipped near the tip makes it much easier to catch a subtle tap before the rod loads up completely — especially with multiple rods out and low visibility.
On the flip side, once the sun's up and you're scanning the water for bait balls, gull activity, or just trying to read your electronics without a blinding glare, a pair of Nova Polarized Fishing Sunglasses cuts the surface glare enough to actually see what's happening on and below the water, not just guess at it.
A Simple Trolling Pattern to Try
Start by trolling a zig-zag pattern across the top edge of a deep hump rather than running a straight line. The turns cause your baits to speed up and slow down slightly on each side, which often triggers strikes from fish that were tracking the bait but hadn't committed. Once you get a bite, note the exact depth and speed on your electronics and try to repeat that pass — walleye in August tend to school tightly, so one fish is rarely alone.
Keep at It — the Fish Are There
Deep-water trolling can feel like a lot of guesswork the first few trips, but once you dial in the depth, speed, and structure combo on your home lake, it turns into one of the most consistent ways to put walleye in the boat all August long. Take your time reading the structure, trust your gear, and don't be afraid to make small adjustments until the rods start bending.
Stock up on the leader line, swivels, and low-light gear you need for your next trip over at Nova Fishing & Outdoors — and good luck out there.
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