As summer wanes, Lindy Land’s lakes undergo changes that challenge the fish-finding skills of anglers seeking walleyes, panfish, pike and other species.

Certain weed species die off. Shifting forage locations and opportunities trigger game fish movements from one area to another. Water conditions change.

In the face of this ever-evolving underwater landscape, some game fish circle the wagons, gathering in tight schools that are hard to find but worth looking for once you do. Other fish hunker down on isolated pieces of structure, while still others prowl predictable edges and transition lines.

In virtually all scenarios, the ability to reliably mark a fish-holding area once you find it is the key to catching the most fish possible from any particular spot. And nothing does that more easily, infallibly and inexpensively than a simple marker buoy.

The process is simple. Find a choice chunk of sunken treasure — such as a rock pile, hump, log or grassbed — and throw out the buoy.

Once you locate a potential hotspot, it’s smart to fully explore what the area has to offer. Use a heavy jig, Lindy Rig, bottom bouncer or No-Snagg Sinker setup to get a feel for the bottom. Diving crankbaits like the Lindy Rally Fish work great, too. Thump bottom to find subtle but important features such as isolated rocks, variations in bottom content and slight depth changes that don’t show up on maps, and are hard to spot on sonar.

When you find one, drop a second marker buoy. But this time, use the buoy to mark the spot your boat should be positioned for you to effectively fish the sweet spot.

You can also use a buoy to mark a school of suspended fish, or a string of several buoys to chart a breakline, weed edge or bottom transition line.

In all cases, using the buoys as reference points makes it easy to visualize where the fish are holding, and plan a strike-triggering attack for each different area.