How to catch redfin 
When targeting Redfin, it's important to be specific with your techniques and locations to achieve the best results. While they can be caught as a bycatch when fishing for other species, using smaller lures and baits specifically for Redfin can significantly increase your chances of success.
Redfin are aggressive schooling fish that respond well to both baits and lures, so it's worth experimenting with different techniques and locations until you find what works best for you. Once you locate a school of Redfin, you can often catch them in numbers.
Redfin can be found in a variety of habitats, but they tend to prefer areas near some form of structure, such as submerged logs, rock walls, weed bed lines, or standing timber. They're also commonly found swarming around the base of larger submerged trees. In lakes with little to no structure, using a sounder can be a great asset in locating Redfin.
It's worth noting that when targeting Redfin using these techniques, it's common to also catch Golden Perch. So, keep that in mind and enjoy the adventure!
Trolling
Schooling together, redfin can be elusive to find. While trolling for redfin is not a common method, it can be an effective way to locate them. Often caught as bycatch while trolling for golden perch, trolling smaller bibbed crankbaits, deep divers, lipless crankbaits, and soft plastics at depths ranging from 4 to 8 meters can produce good results in lakes. Experimenting with different lure types and colours, and using 2 to 3 lines in the water, can help identify the fish's preference on any given day. Trolling is best done on banks with less timber or in areas where larger dead timber stands vertically in the water, but finding a balance between being in a good zone and avoiding snags is essential. Once a school is located, the same area can be worked over again, or an alternative technique can be employed.
Boat-based lure fishing
Redfin can be commonly caught in lakes using a vertical fishing approach, which involves positioning oneself stationary above the fish in trees and dropping lures down to them. However, this technique requires constant movement every 20 minutes or so, or the use of a good sounder to locate the schools initially. Small soft plastic lures and small vibes have proven to be highly effective in these circumstances, allowing for aggressive hops and pauses that ignite the redfin's competitive and aggressive nature. This technique requires patience and precision, but can result in rewarding catches.
Bait fishers
Anglers targeting Redfin can find great success by bait fishing. Using natural baits such as earthworms, small yabbies, or freshwater shrimp is a popular technique. To minimise snagging, it is recommended to use rigs that keep the bait anchored in a relatively stable position. A running sinker or paternoster/dropper rig with a size #1 hook is ideal. Focus on areas near standing timber, and be prepared to move around to find the best spot. In lakes, Redfin can often be found in open water away from structure, which is where high-quality electronics come in handy. When fishing in rivers, it is often more productive to focus on backwaters or areas where the flow of the river meets a backwater. With a bit of persistence and the right equipment, Redfin fishing can be a thrilling and rewarding experience.
Shore based fishers
In lakes, avid anglers will relish the opportunity to walk or wade their way around with a spin rod and use the cast-and-move method. By firing a series of fanned-out casts in front of you and then moving left or right and repeating the process over a period, you can cover a good piece of the shoreline and stand an excellent chance of intersecting active redfin.
This prospecting style of fishing can be highly effective using the same lures you might use for trolling, favouring lures that can be cast a long way into deeper water and then bounced off the bottom during retrieval. Longer rods can help you cast further to cover more water, so a 7-to-7.5-foot medium-actioned rod with a 2500 sized reel, 3 kilo braided line, and a 3 or 4 kilo leader of monofilament or fluorocarbon of about 6 feet in length is the perfect setup.
Bait fishers will benefit from a good rod holder, so you can anchor your gear down and not end up with a rogue rod skating off into the water. Remember to concentrate your efforts around the standing timber and move often if you're not getting a bite. This approach is especially useful when fishing in open water away from structure, where good electronics will prove their worth. Whether you prefer lures or bait, this method of fishing promises an exciting and dynamic experience that's sure to thrill even the most experienced angler.