Although a giant bluegill can turn up at any time, two Calendar Periods have proven consistently better than the Spawn Period for trophy fish. They are the Prespawn Period, with water temperatures from about 55°F to 65°F, and the Coldwater Period of midwinter, when water temperatures stabilize and stay below 42°F. The Spawn Period is the third choice for reasons we’ll see in a moment.

Prespawn: During this period bluegills focus on feeding. Depending on the region, this window occurs 3 to 6 weeks prior to bedding, providing plenty of time to search for trophies. Both male and female bluegills often reach a physical peak at this time, with females feeding actively to nourish heavy roe sacks, and males not yet tattered from nest-guarding duties.

Males and females stage near prime spawning locations and may make daily movements to protected bays, docks, or beach areas. Insect hatches often occur during the low-light hours, when big fish may feed softly on the surface or pursue emerging prey deeper in the water column. Docks and piers also attract fish at this time.

During midday, schools of prespawn fish hold closer to the bottom, but on sunny days may move to within 3 feet of the surface to feed on windblown aquatic organisms. As the days grow warmer and water temperatures approach 70°F, big ’gills move to prime bedding areas of shallow sand or gravel.

The Spawn: Although this a wonderful time to fish, given the frequently nonstop action, the Spawn Period usually doesn’t produce the biggest bluegills in the system or of the season. The biggest fish tend to spawn deeper and sometimes earlier than 8- to 9-inchers. By the time nest-­guarding males are visible in the shallows and attacking anything that swims, sumo-sized ’gills are finishing the spawn in nearby, deeper environs.

Coldwater Period: Open-water anglers are discovering what ice anglers have long known: The biggest bluegills often concentrate tightly in defined areas. That’s good and bad. While low water temperatures tend to pack King Kong ’gills into specific spots, it also makes them vulnerable to overharvest. 

Locating coldwater bruisers in small lakes and ponds is simple, as most reside in deeper areas near the dam for much of the winter. This is true of shallow lakes with maximum depth from 8 to 15 feet. A string of mild 50°F days can lure ’gills to within 3 feet of the surface, making them vulnerable to livebait presentations with sensitive float rigs.

In larger lakes, fish tend to hug the bottom on main-lake flats in major tributary arms in depths of 18 to 24 feet. Most of these areas are near dead or dying weedbeds that harbored fish throughout the summer and into late fall. Giant ’gills tend to roam the flats in smaller schools, sometimes mixing with jumbo yellow perch. They also favor lower-light conditions more than do fish in smaller, shallower lakes.

Gear

Spinning rods up to 7 feet allow longer casts and fine lure and bait presentations. Longer, ­custom-made ultralights, such as those made from flyrod blanks, are the rods of choice for ultrasensitive deliveries. Other options include 10- to 14-foot poles or Euro-style rods for doodlesocking around weeds, docks, and brush, or dabbling baits on spawning fish. 

The B & M Pole Company makes a line of poles as well as longer ultralights that are great for drifting or casting small baits. We’ve done well with 11- to 12-foot models matched with medium-sized spinning reels, which allow long casts and leverage to pull big panfish out of weedy or brushy areas.

Favorite lines are those like Trilene Sensation and Stren Magnathin in 4-pound test. Clear is the standard color, with fluorescent blue for murky or tannin-stained waters. 

If you’re trying to pull pound-sized ’gills through heavy brush or weedgrowth, increase line strength to 8- or even 10-pound test. Supple, castable lines are needed to deliver natural baits to discriminating fish. Midsized reels have larger spools than mini-reels, and line spools off more easily for longer casts.

Livebait 

There’s a time and place for tiny hairjigs, small crankbaits, and midget spinners, but for putting the odds in your favor, livebait wins under many conditions. Top prespawn baits can be weightless presentations of small live earthworms or redworms. Smaller nightcrawlers, sold in the mid-Atlantic as “dillys,” produce, too. The best size is 2 to 4 inches long. These baits appear most natural when fished with little or no weight. The long rod and limp mono come into play here, delivering baits that appear completely natural. Big bluegills use their keen eyesight and picky nature to discern real from fake.

Don’t use a hook that’s too small. Tiny #12 or #14 hooks often are swallowed by fish you want to release. Also, a tiny hook can pop or slide right out of a big bluegill’s mouth without hooking its lip, due to its minute gap. Try a #8 or even a #6 circle-style hook, such as the Owner SSW Needle Point, Gamakatsu Octopus Circle, or #8 or #10 Aberdeens in bronze or red. Many anglers feel that giant bluegills know better than to bite gold hooks. 

Skewer worms completely on the hook, covering the hook eye, and allow at least a third of the bait to writhe. Trophy ’gills like lively baits, so replace worms often and discard damaged baits. Where longer casts are required, use small Thill River Master center sliders or Mini-Stealth floats. Set bobber stops at the appropriate depth. Clip-on weighted bobbers work but may spook fish if the water is clear or shallow. Small shot can be added 12 to 18 inches above the hook to gain casting distance.

In cold water, try dart or ballhead jigs of 1/32 or 1/64 ounce, tipping with live worms. During colder months when worms may not be available, try waxworms, mealworms, or Berkley Gulp! Earthworms. Dart-style jigheads, popular with shad anglers on the East Coast, have excellent action while suspended from a sensitive slipfloat on a choppy surface. Tiny ice-flies tipped with bait are another good choice. Again, keep the bait fresh and lively. 

Giant bluegills—humpheaded fish that measure 10 to 12 inches and weigh over a pound—often are found close to home, in lightly fished private and public waters where anglers overlook high-quality panfishing in favor of bass or trout. True freaks—fish that approach or exceed 2 pounds—remain rare but possible catches. All big fish are rare and require catch and release to sustain a fishery.