What size topwater lure should I use?

Choosing the right size topwater lure is crucial for maximizing your chances of success on the water. The size of your lure should match the type of fish you are targeting, the conditions you are fishing in, and the type of prey naturally found in that environment. Understanding these factors will help you select a topwater lure that looks natural to fish and triggers aggressive strikes.

Generally, smaller topwater lures, ranging from 2 to 3 inches in length, are best suited for targeting species like smallmouth bass, panfish, trout, and even finesse largemouth bass in clear water. Smaller lures imitate insects, small baitfish, or young frogs, which are often the primary food sources in these settings. In calm, clear water where fish can scrutinize a lure closely, a smaller, more natural presentation can be far more effective than a big, splashy one. Lightweight rods and light fishing line (6–12 lb test) are typically used to cast and retrieve these smaller topwaters properly.

Medium-sized topwater lures, typically between 3 to 5 inches, are the most versatile and commonly used. This size works well for a variety of species including largemouth bass, smallmouth bass, striped bass, redfish, and speckled trout. Medium-sized lures strike a good balance: they are large enough to attract attention but not so big that they intimidate fish. This size range is excellent for all-around fishing, whether you are working poppers, walkers, or frogs. Medium topwater lures often match the size of adult baitfish, which are prime targets during most of the fishing season.

Large topwater lures, those 5 inches or larger, are best reserved for targeting big, aggressive fish such as northern pike, muskellunge (muskie), peacock bass, and large striped bass. In saltwater, big topwaters are also ideal for species like tarpon, tuna, and giant trevally. These oversized lures make a lot of noise, throw a lot of water, and produce significant vibration—qualities that draw strikes from powerful predators looking for a hearty meal. Larger lures are also effective when baitfish are larger during late summer and early fall, or when you want to trigger a territorial reaction from trophy-sized fish. Heavy-duty gear with stout rods, strong reels, and heavy braided line (30–80 lb test) is often necessary to properly cast, retrieve, and fight fish with these large lures.

Water conditions also influence lure size selection. In clear, calm water, downsizing often works better because fish are more cautious. In choppy, stained, or windy conditions, larger lures that make more noise and surface disturbance can be more effective at drawing attention. Bright or overcast skies can also play a role: brighter conditions might call for a smaller, more natural presentation, while darker or overcast days can favor a larger, louder lure.

Ultimately, picking the right size topwater lure comes down to matching the hatch (choosing a lure that mimics local prey), considering the aggressiveness of your target species, and adjusting for water clarity and weather. When in doubt, starting with a medium-sized lure and adjusting up or down based on fish response is a solid strategy.